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Over the years, we have followed the business philosophy of "efficiency, pragmatism, innovation, and transcendence", committed to providing customers with high-quality Gas Lift Valve, TSV Series Subsurface Safety Valves, Sliding Sleeve Door and services, hoping to create a win-win situation with customers. Our company has been committed to technical improvement and scientific management of business philosophy, organization of production and sales. With leading manufacturing technology and strict quality management system, we provide customers with cost-effective product solutions and perfect and thoughtful service solutions. We will increase the company"s technological reforms to enhance production capacity and strive to make our own strategic resource.

The wireline retrievable injection-pressure-operated gas lift valve is operated by casing pressure. This product can be used with the side pocket gas lift mandrel to complete gas lift production. Different from the conventional injection-pressure-operated gas lift valve, this product can be run and pulled by the wireline tool, thus reducing the maintenance cost for tripping operation.

Our primary purpose is to give our shoppers a serious and responsible company relationship, giving personalized attention to all of them for Supply Subsurface Safety Valve/Dhsv/Sssv/Trscssv for Oilfield Tubing. We have formed a high-quality professional scientific and technological research team. We have a complete production process, a strict quality assurance system, and our products have various specifications and are stable in quality.

The well BX is located within B Field and designed as oil producer well with a conventional tubing jointedElectrical Submersible Pump (ESP) system which was installed back in 2008. Refer to figure 1, the initial completion schematic is 3-1/2″ single string that consist of the single production packer, gas lift mandrel, tubing retrievable Surface Controlled Subsurface Safety Valve (SCSSV) and ESP. The production packers equipped with the feed thru design to accommodate the ESP cable and the gas vent valve as part of the ESP completion design. The gas lift mandrel was installed in the completion string as a backup artificial lift method to receive the gas lift and orifice valve in the event of the conventional ESP failed. Hence the well still able to produce by introducing the gas thru the annulus to activate the gas lift valve. Eventually throughout the end of the the field life, the well would depend on the ESP system for the primary lifting method due to gas lift depth limitation and the gas supply.

The conventional ESP failed after seven years of operation which is above the average ESP lifetime. The well last produced at a flow rate with 28 % water cut, however the well is not at the end of the field life. Based on the economical study with the right technology and cost efficient approach, the well still economicaly profitable. The Thru Tubing (TT) ESP technology is approached as cost effective solution compare to fully well workover. Despite a couple of operational challenges, for example, setting the cable hanger, maintaining downhole barrier requirement, the Thru Tubing Electrical Submersible Pump Cable Deployed (TTESP CD) and Cable Thru Insert Safety Valve (CT-ISV) was successfully installed. Several post-installation findings have uncovered some problems which are requiring some additional technical and operation improvement for future similar applications.

This paper will highlight the deployment of the Cable Thru Insert Safety Valve (CT-ISV) that was successfully installed as pilot, which is the first application in the world, and also highlights the success, lesson learnt and improvement for future requirement for the CT-ISV application as one of the solution for retrofitting completion application without jeopardizing the well integrity.

This achievement is collaboration between Company and service partner as the technology and deployment under the proprietary scope. Further technology application, the replication of this insert safety valve was conducted and successfully deployed on other three wells.

Tubing Retrievable Surface Controlled Subsurface Safety Valves(API 14A SCSSV), W P 10000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TH series subsurface safety valves are tubing retrievable surface controlled subsurface ... Read More Get Best Price

Subsurface Safety Valves(API 14A SCSSV), W P 10000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TH series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves used for high pressure ... Read More Get Best Price

Subsurface Safety Valves(API 14A SCSSV), W P 10000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TH series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves used for high pressure ... Read More Get Best Price

Subsurface Safety Valves(API 14A SCSSV), W P 10000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TH series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves used for high pressure ... Read More Get Best Price

Subsurface Safety Valves(API 14A SCSSV), W P 10000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TH series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves used for high pressure ... Read More Get Best Price

Subsurface Safety Valves(VCTSY Series Ultra-temperature, Patent for Invention), Working Temperature 350 ℃ The VCTSY series ultra-temperature subsurface safety valves are tubing retrievable surface controlled ... Read More Get Best Price

Subsurface Safety Valves(TSS-4 1/2-5.97---TSS-7-8.375 SCSSV), WP 5000psi, 9Cr1Mo/13C/S13Cr/Incone The TSS series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves. ... Read More Get Best Price

SCSSV(TS-5 1/2 -8---TS-7-9.288, Subsurface Safety Valves), Curved Flapper WP 10000psi, 9Cr1Mo/13C/S13Cr/Incone The TS series subsurface safety valves are tubing retrievable surface controlled subsurface safety ... Read More Get Best Price

Subsurface Safety Valves(TSV-2 7/8-5---TSV-7-8.35 SCSSV), Working pressure 5000psi, 9Cr1Mo/13Cr/S13Cr/Inconel The TSV series subsurface safety valves are tubing retrievable surface controlled subsurface safety ... Read More Get Best Price

Matched with the standard nipple---Subsurface Safety Valves(SCSSV), WP 5000psi The TSS series subsurface safety valves are tubing retrievable surface controlled subsurface safety valves. Compared with the TS ... Read More Get Best Price

Through innovative organic development and strategic acquisition, we have built a broad portfolio of ASME and API valves that services the demands of global drilling, production, pipeline, storage, transmission, and critical service applications.

The RuiFeng"s model “TFCW” tubing-retrievable safety valve is a flapper-type, hydraulically operated TRSV installed in the production string. It is designed to shut in a well in case of an uncontrolled surface or subsurface event. The valve is held open by the hydraulic control pressure and remain open until the control pressure is released. The robust hydraulic piston provides a reliable control system and isolate the inner critical part from the well fluid. RuiFeng TFCW TRSV utilizes a metal-to-metal body joint and metal to metal flapper & seat to provide a superior well containment.

The RuiFeng TFCW TRSV can be permanently locked open by a lock-out tool, and establish a communication path between the TRSV hydraulic chamber and tubing string for a wireline retrievable insert valve.

The RuiFeng FTRN tubing retrievable safety valves are designed with single rod-piston actuation and flapper type closure mechanism. The valve is held open by the hydraulic control pressure and remain open until the control pressure is released. The non-elastomer piston seal with back-up system are provided for better dynamic and static seal.

If necessary, the RuiFeng TFRN TRSV can be permanently locked open by a lock-out tool, and an additional communication tool can establish communicated path between the TRSV hydraulic chamber and tubing string before installing a wireline-retrievable insert valve.

RuiFeng"s “TFRS” TRSV is a single rod piston, curved-flapper type, tubing retrievable safety valve engineered to provide a reliable operation and long-term life in a hostile environment.

The valve utilizes the non-elastomeric single piston actuator, metal to metal body joint, a rugged flapper-closure mechanism, centralizing system to provided 100% well containment when closed. For maximum reliability, the piston mechanism incorporates static metal to metal stop seals while the piston reaches full open and full close positions. The slim line curved flapper design is utilized to optimize OD and ID of the valve for maximal production rate and smaller casing size.

An industry-standard self-equalizing feature can be added to this valve. It allows the pressure drop before the flapper start to open and prevent flow directly across the critical MTM seal interface.

The RuiFeng TFRS TRSV can be permanently locked open by a lock-out tool, meanwhile a communication path will be established between the TRSV hydraulic chamber and tubing string to control a wireline retrievable insert valve.

Once a well commissioned to plant/ production facility then is set for a prolonged producing phase and in course of production well may face multiple completion string failures from any completion jewelry which can lead to suspend production or force to produce compromising well safety which is always unacceptable or operational risk.

The scale may cause serious well intervention problems during wireline jobs to run and seat plugs, downhole chokes, shifting SSD, running to latch GLV or opening Downhole safety valves etc etc. Scale deposits usually treated/ dissolved with scale dissolvers (a blend of converters and chelating agents) mixed with fresh water (if water base) or selecting appropriate fluid (Toluene & Xylene mixed with HSD and water in certain ratio) after lab tests usually. This operation is conducted via Coiled tubing in two to three stages with 42 to 72 hours of soaking times etc.

SCSSV (Surface Controlled Subsurface safety Valves) are downhole safety valves which give positive shut-off during any disaster at wellhead or well fittings. The safety valve will either be Tubing mounted called TRSCSSV or Wireline retrievable called WRSCSSV. Down hole safety valve is operated by applying hydraulic pressure from surface through a ¼” Control line passing thru tubing hanger via annulus to Safety valve. There are several issues can happen malfunctions to Safety valves such us flapper or flow tube stuck or valve sealing elements/ v-packings, static and dynamic seal wear outs etc.

WRSCSSV may be pulled out via slick line and any problem may be rectified whether its flow tube stuck issue or seals & packing etc. If such problems occur in any TRSCSSV then you may not go for any W/O operation to pull couple of stands and replace TRSCSSV however you still have some cost effect options to restore well safety.

The Oilenco version offers a simple ball and lock mechanism which precisely locates and grips the safety valve flow tube and in same way Baker one offered Permanent Lock Open Tool is compatible to PLOT baker all FVL, FVLE, FVLS, FVH, FVHE and deep set FVHD & FVLD model TRSCSSVs

After PLOT job a wireline retrievable safety valve assembled with appropriate lock mandrel + a spacer tube is run and straddled / seated into TRSCSSV upper locking groove using same existing control line and this is one of excellent solution to eliminate safety issue. Such type of safety valves are called Insert –Type WRSCSSV.

Very similar, when WRSCSSV (Wireline Retrievable Surface Controlled Subsurface Safety Valves) dislodge/ pop out again and again due to damage/ wear out or design fault of landing nipple locking key grooves upper, then upper slip assy may be a good choice/ application to to assemble Downhole Safety Valve with S&LM( Slip& LockMandrel) and secure WRSCSSV to avoid well to costly Workovers to restore well safety barrier.

PBR (Polished Bore Receptacles) are hooked above production packers in completion string where extreme movement is anticipated in high pressure and temperature wells. In course of production PBR leakages are also reported and in such caused to cure safety barrier retrievable Anchored Production Straddle (APS) assembly are best options.

In dual, straddled and multi zone completion wells SSD gate shifting is normal in well intervention jobs. Repeated SSD shifting up and down cause leakages from SSD gates due to O-ring worn outs or gate finger damages due to excessive jarring. SSD leakages caused pressurized annulus which is considered to be a safety barrier.

SSSV: Subsurface Safety Valve: a valve installed in the tubing down the well to prevent uncontrolled flow in case of an emergency through the tubing when actuated. These valves can be installed by wireline or as an integral part of the tubing. Subsurface Valves are usually divided into the following categories.

SCSSV: Surface-Controlled Subsurface Safety Valves: SSSV which is controlled from the surface and installed by wireline or as an integral part of the tubing.

SSCSV (storm choke): Subsurface-Controlled Subsurface Safety Valve: SSSV which is actuated by the flow characteristics of the well, and is wireline retrievable.

ASV: Annulus Safety Valve: a valve installed in the well to prevent uncontrolled flow in the casing-tubing annulus when actuated. It consists of an annular safety valve packer with a by-pass. The opening in the by-pass is controlled by a safety valve, which can be an integral part of the packer on a wireline retrievable valve.

The tubing safety valve is installed to provide a flow barrier in the production tubing string, between the tail pipe and the surface or mudline. Such a valve consists of 3 main items:

Safety valve should not be considered as an extra barrier in the tubing when the well is closed-in for a long period of time. Sealing is not optimal because of design space limitations. They should not be used to regularly shut-in the well.

The annulus safety valve (ASV) provides a flow barrier in the casing-tubing annulus. It consists of an annular safety valve packer with a by-pass. The opening of the by-pass is controlled by a safety valve, which can be an integral part of the packer or a wireline retrievable valve. It is a surface controlled, fail-safe closed device for annular flow.

In general, the ASV is installed in gas lifted wells where the annulus is filled with compressed gas and serves as a barrier. Because of gas lift valves, the tubing cannot be considered as a barrier between the reservoir and the surface. Although the gas lift valves are commonly equipped with check valves, they are not a valid barrier. The ASV is normally located at a shallow depth to reduce the volume of the gas stored in the annulus between the ASV and the wellhead.

The valve body and connections should be at least as strong as the tubing. It should provide leak resistance to internal and external pressures and be compatible with the fluids.

During the installation of the tubing string, it is necessary to keep the valve open. This can be done by inserting a retrievable lock-open tool in the valve, without or in combination with the control signal from surface.

Multiple zone completions, where wireline jobs are frequent on equipment installed beneath the safety valve. The larger bore of a TR-SSSV facilitates the operations, where a WR-SSSV normally has to be retrieved.

The wireline retrievable safety valve (WR SCSSV) is run on wireline. A lock mandrel is screwed on top of the WR SCSSV that enables using a landing nipple. This nipple must hold the valve/mandrel assembly against pressure differentials loads. The nipple has a polished bores to seal the path between WR SCSSV and landing nipple by seals fitted to the outside of the valve/mandrel assembly.

With hydraulically operated WR SCSSVs, the external seals have also the function of containing the control fluid that is to be transmitted to the valve actuator.

The landing nipple for an electrically operated valve has a connection for an electric control line and an inductive coupler to transmit the signal to the WR SCSSV.

Trough Flowline retrievable safety valves use specially constructed mandrels and landing nipples. They must have a stronger hold-open force than SCSSVs, because the Trough Flowline tools are circulated upwards in the tubing string, which tends to drag the valve"s flow tube up, causing the valve to close. To overcome this problem the actuator hold-open force should be higher than the sum of the normal hold open force and the drag forces that can be experienced. Trough Flowline retrievable SSSVs can be used for subsea completions where wireline operations are difficult.

Another application is to install a SSSV in tubing without a landing nipple. Such a system consists of a production packer with an integral safety valve. The assembly is positioned by the coiled tubing and the packer is set by pressure from the coiled tubing.

Subsurface controlled valves are normally open and are designed to close with an abnormal change in well condition. They detect the flow or well pressure and close when the set limit is reached. Basically there are three different concepts:

Surface controlled valves utilise valve elements that are normally closed. This fail-safe mode requires that the valve is to be opened by a hydraulic control-line pressure. Loss of this pressure will result in the closing of the valve by a spring. The hydraulic pressure is supplied from a surface control panel to the valve and acts on the actuator. Typical for hydraulic operated SCSSVs is the hydrostatic head pressure, generated by the vertical column of control fluid, which additionally acts on the valve actuator.

the surface control line pressure and the time for valve operation will give an indication whether the valve opening and closing performance is satisfactory;

TR-SCSSVs of which the hydraulic actuator is damaged can be put back into function by inserting a back-up valve (insert valve), which can be operated with the existing hydraulic control system;

Electrically operated SCSSVs have in common with hydraulic SCSSVs that the differential pressure over the closed valve must be equalised before the valve can be opened and a means to keep the valve open must be permanently available from surface for fail safe operation.

With electric valves that means is an electrical signal, either dc or ac. Loss of this signal will result in closing of the valve. The force to close is always provided by expanding steel springs, which are precompressed by either electric power or by the well pressure.

One type of mechanically operated SSSV is the Go-Devil valve from Otis. This safety valve is a normally open valve. It is designed to close by an impact force on the head of the valve, provided by a heavy ball that is dropped from a ball-dropper assembly at surface. The impact force will activate the spring based mechanical linkage, that moves the valve to the closed position.

The ball-dropper assembly is flange mounted on top of the Christmas tree. The pocket of the ball dropper retains the ball, sized to activate the Go-Devil SSSV by falling against flow and impacting the head of the valve. The ball dropper assembly retains the ball until the loss of the control signal activates the release mechanism.

Three types of valve closure elements are commonly used for SSSV: the ball, the flapper and the poppet type. The flapper valve can further be divided in flat, contoured and curved flappers, while the poppet valve can be divided into closed body and sleeve type poppet valves. All types of closure elements pinch off the fluid stream by a pair of opposing surfaces rather than sliding surfaces. This principal method has the advantage that it can provide a good tight shut-off when the sealing surfaces are sound.

As noted the flapper valves may be flat, curved or contoured. The latter two were introduced to obtain a better OD/ID ratio, as they are shaped to fit when in the open position, more efficiently in the annular space of the valve housing.

The seat angle is the shape of the flapper sealing surfaces, which is an important parameter of the valve sealing performance. Traditional flapper valves have a seat angle of 45°, as the angled seat has the advantage that:

Due to the characteristics of the curved flapper design the seat angle may vary from 0° to 60° along the flapper circumference, thus requiring stringent alignment of the sealing faces. The contoured flapper design has an angled sealing surface over the full circumference of the flapper and thus has potential to provide good sealing. Field experience indicate that the flapper valve type is more reliable than the ball valve type.

When a SSSV is closed, a high differential pressure may be present across the valve closure element. Opening the valve under this condition will be difficult, if not impossible, because of the incapability of the relatively small valve mechanism to cope with the load working on the large diameter closure element. Insufficient equalising will introduce high loads that could deform critical valve parts. Also, erosive wash-out on the closure element by the sudden rush of well fluid through the partly opened valve can occur. Therefore, prior to opening a SSSV it is necessary to equalise the differential pressure.

The depth at which to set the subsurface safety valve depends upon a number of variables, such as hydrate and wax formation tendencies, deviation kick-off depth, scale precipitation, earthquake probabilities, etc. The OD of the safety valve may influence the casing/tubing string configuration and should be addressed at the conceptual design stage.

For tubing safety valves it is obvious that the deeper the valve is set (closer to the hydrocarbon source) the more protection it will give to the completion. However, the application of a deep-set tubing SSSV generates some unfavourable conditions, namely:

the higher temperature further downhole effects the reliability and the longevity of non-metal valve parts, for instance polymeric seals in hydraulic valves and electric/electronic parts in electric valves;

the hydrostatic head pressure generated by the hydraulic control-line column will generate excessive forces on the valve operating mechanism. Hence, designing and manufacturing of these valves becomes more complicated.

Furthermore, the required control pressure to operate a single control line valve (the majority of SSSVs) could become too high and more than the pressure rating of standard well completion equipment.

The approach for determining the required hydraulic control pressure at surface to hold a valve open depends on the type of valve, viz. the single control line valve, the dual control line valve and the valve with a pressure chamber.

Due to friction in the valve mechanism and the spring characteristic, there is a certain spread between the valve opening pressure (Pvo) and closing pressure (Pvc).

To ensure that the valve is completely open, a safety factor or pressure margin (Pm) is added to the surface control pressure. Hence, the available control pressure at surface to open the valve must be at least:

The dual control line valve or the pressure balanced valve uses a second control line from surface to balance the generated hydrostatic head pressure in the control line. The forces acting to operate this type of valve are as follows:

Due to friction in the valve mechanism and the spring characteristic, there is a certain spread between the valve opening pressure (Pvo) and closing pressure (Pvc).

When the valve is in the fully open position and the control and the balance line are both filled with fluid of the same fluid gradient, the following force equilibrium exists:

To insure that the valve is completely open, a safety factor or pressure margin (Pm) is added to the surface control pressure. Hence, the available control pressure at surface to open the valve must be at least:

The dome charged valve uses a pressure in an integral dome to (partly) balance the generated hydrostatic head pressure in the control line. The forces acting to operate this type of valve are as follows:

Due to friction in the valve mechanism and the spring characteristic, there is a certain spread between the valve opening pressure (Pvo) and closing pressure (Pvc).

To ensure that the valve is completely open, a safety factor or pressure margin (Pm) is added to the surface control pressure. Hence, the available control pressure at surface to open the valve must be at least:

The theoretical maximum setting depth of a single control line SSSV depends on the capacity of the valve closing spring to overcome the generated hydrostatic head pressure in the control line. For fail safety it is essential that the tubing pressure is not taken into account for the assistance of valve closing, even though single control line valves are assisted by this pressure. Hence, the governing factors for the maximum valve setting depth are:

* For fail safety, the worst case must be assumed, one in which the control line ruptures near the valve and annulus fluid will enter the control line. Therefore, for any completion the heaviest fluid gradient, either from the control fluid or from the annulus fluid, is used as the minimum control line fluid gradient.

Because the hydrostatic head pressure in the control line is counteracted, the setting depths of the dual control-line and the dome-charged valves are theoretically not limited.

As soon as mankind was able to boil water to create steam, the necessity of the safety device became evident. As long as 2000 years ago, the Chinese were using cauldrons with hinged lids to allow (relatively) safer production of steam. At the beginning of the 14th century, chemists used conical plugs and later, compressed springs to act as safety devices on pressurised vessels.

Early in the 19th century, boiler explosions on ships and locomotives frequently resulted from faulty safety devices, which led to the development of the first safety relief valves.

In 1848, Charles Retchie invented the accumulation chamber, which increases the compression surface within the safety valve allowing it to open rapidly within a narrow overpressure margin.

Today, most steam users are compelled by local health and safety regulations to ensure that their plant and processes incorporate safety devices and precautions, which ensure that dangerous conditions are prevented.

The principle type of device used to prevent overpressure in plant is the safety or safety relief valve. The safety valve operates by releasing a volume of fluid from within the plant when a predetermined maximum pressure is reached, thereby reducing the excess pressure in a safe manner. As the safety valve may be the only remaining device to prevent catastrophic failure under overpressure conditions, it is important that any such device is capable of operating at all times and under all possible conditions.

Safety valves should be installed wherever the maximum allowable working pressure (MAWP) of a system or pressure-containing vessel is likely to be exceeded. In steam systems, safety valves are typically used for boiler overpressure protection and other applications such as downstream of pressure reducing controls. Although their primary role is for safety, safety valves are also used in process operations to prevent product damage due to excess pressure. Pressure excess can be generated in a number of different situations, including:

The terms ‘safety valve’ and ‘safety relief valve’ are generic terms to describe many varieties of pressure relief devices that are designed to prevent excessive internal fluid pressure build-up. A wide range of different valves is available for many different applications and performance criteria.

In most national standards, specific definitions are given for the terms associated with safety and safety relief valves. There are several notable differences between the terminology used in the USA and Europe. One of the most important differences is that a valve referred to as a ‘safety valve’ in Europe is referred to as a ‘safety relief valve’ or ‘pressure relief valve’ in the USA. In addition, the term ‘safety valve’ in the USA generally refers specifically to the full-lift type of safety valve used in Europe.

Pressure relief valve- A spring-loaded pressure relief valve which is designed to open to relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored. It is characterised by a rapid-opening ‘pop’ action or by opening in a manner generally proportional to the increase in pressure over the opening pressure. It may be used for either compressible or incompressible fluids, depending on design, adjustment, or application.

Safety valves are primarily used with compressible gases and in particular for steam and air services. However, they can also be used for process type applications where they may be needed to protect the plant or to prevent spoilage of the product being processed.

Relief valve - A pressure relief device actuated by inlet static pressure having a gradual lift generally proportional to the increase in pressure over opening pressure.

Relief valves are commonly used in liquid systems, especially for lower capacities and thermal expansion duty. They can also be used on pumped systems as pressure overspill devices.

Safety relief valve - A pressure relief valve characterised by rapid opening or pop action, or by opening in proportion to the increase in pressure over the opening pressure, depending on the application, and which may be used either for liquid or compressible fluid.

In general, the safety relief valve will perform as a safety valve when used in a compressible gas system, but it will open in proportion to the overpressure when used in liquid systems, as would a relief valve.

Safety valve- A valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being exceeded, and which is designed to re-close and prevent further flow of fluid after normal pressure conditions of service have been restored.

Whether downhole or subsea, safety can be hard to achieve in the oil and gas industry. Sudden pressure spikes can ruin equipment, leading to production stoppages and worse. Protection starts at the component level, which is where Lee Pressure Relief Valvescome into play.

Our relief valves come in three main varieties. Safety relief valves are designed to be exercised for intermittent “pop-off” applications. Pressure-regulating valves are intended to operate more continuously with stable performance throughout the operating range. Thermal relief valves relieve a few droplets of fluid from a trapped volume expanding due to rising temperatures. Each type of valve plays an essential role in downhole oil tool applications, and each is manufactured to the exacting tolerances that this role requires.

Like all products from The Lee Company, pressure relief valves are small, lightweight, and incredibly durable– enough to serve out the entire lifespan of an oil tool. In addition, these products are available in a range of sizes and cracking pressures.

Subsurface Safety Valve TRSSSV is a kind of tubing retrievable safety valve which is controlled at the surface. It directly connects to the tubing string. There is a hydraulic control line connecting to the safety valve from the ground. While a certain amount of pressure is supplied through this control line to the safety valve, the valve remains open; while the pressure is released, the safety valve will close and the tubing pass is closed at the same time.

Our downhole safety valves provide your testing operations with fail-safe sustained control downhole in the event of an emergency or to facilitate test procedures.