Oil Well Testing  Annulus Pressure Operated Tester Valve (POTV) 

Product Introduction

The POTV is an annulus pressure-operated downhole ball valve. It is run with a nitrogen section which compensates for changes in annulus hydrostatic pressures. The POTV is designed to work in conjunction with either retrievable or permanent packers as no set-down weight is required when operating. An optional index lock-open system allows the ball to be retained open every second cycle. This lock open feature allows the POTV to act as a fluid by-pass when placing seals in a packer bore and aids in wireline and well kill procedures. 

Specifications:

Working Pressure (psi/Mpa) 15,000psi/103.42 Mpa 

Working Temperature (°F, °C) 350°F / 175°C

OD (in/mm) 5" / 127mm

ID (in/mm) 2.25"/57.2mm

Upper Thread connection 3 ¾" Stub Acme, 6 TPI

Lower Thread connection 3 ¾" Stub Acme, 6 TPI

Tensile Strength 350,000lbf/155,600daN

Tensile strength at Max working Pressure 30,000lbf/13,345daN

Tool Length ( in/mm) 153in/3886mm

Tool Weight (lbs/kg) 640 lbs/ 290 kg

Service condition H2S per Nace MR-01-75

Features & Benefits

Pressure Operated tester valve is a full- opening, annulus pressure-operated valve. It measures multiple closed-in 

pressures in cased holes where pipe manipulation is restricted and a full-opening string is required. The nitrogen 

chamber is charged at the surface to a selected pressure determined by surface temperature, bottomhole 

temperature, and bottomhole pressure. If the intended test requires a permanent packer that uses a stinger mandrel 

or seal nipple, a variety of bypass tools are available, depending on field application, to help ensure that the 

formations and downhole equipment are protected from excessive pressure buildup.

•The ball valve operates independently of internal pressure changes, such as with acidizing or fracturing

 operations.

•Advanced materials and processes provide a unique metal-to-metal seat for exceptional gas-holding capabilities.

•The Pressure Operated tester valve has been through an extensive five-day qualification testing at 400°F and1

 5,000 psi burst and collapse pressures.

• An open-in feature allows the operator to run the Pressure Operated tester in the hole with the ball valve opened or

 closed.

•Fluids can be spotted or circulated through the PRESSURE OPERATED tester with the packer unseated.

A double nitrogen chamber can be added to the Pressure Operated tester for use in deep, hot, high-pressure wells to 

reduce the operating pressure.

Operation:

The POTV is run above the packer and recorder carriers in a cased hole test string. Thereafter it provides for downhole shut-in and flowing test procedures by selectively closing and opening the test string to flow. When the test assembly is run to depth and the packer set, applied annulus pressure causes the ball valve to rotate to the open position, allowing full bore passage through the tool. It remains open until the pressure is bled off, or when running the lock open feature, and closes when the tool is cycled again. 

The POTV will normally be run in the lock open position, testing the string against the Self Fill Tubing Tester Valve (SFTTV). If run in the closed position it may be tested against as many times as desired. (If used in conjunction with Expro's circulating valves it provides an effective system for running TCP guns

in a well and establishing an underbalance by running a portion of the tubing string dry).

Pictures:

About Us

Xi'an Kingwell Oilfield Machinery Co.,Ltd is a professional supplier for oilfield products according to the API standard.

Our products have exported to USA, Canada, Egypt, India and UEA, etc with 40 FCL containers per month. Now, with high quality and short supply and good service, our products have got good reputation home and abroad .

Here we got some prise as follows

Certifications

Kingwell is a CNPC & SINOPEC & BV certified company, having all the Quality Systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure our products match the highest quality standards.

We test our products strictly according to the NACE MR 0175-2002 Standard and our quality assurance period is 12 months.

Certificates endorsed by DNV/BV/ABS and Documents we can supply with the shipments:

1. Pressure Test Certificate with Graph and time recorded.

2. Function Test   

3. Rubber Products NACE Compliance   

4. Material Mill Certificate and treatment characteristics

5. H2S Compliance   

6. Service Manual

7. Parts Manual

8. Testing Procedures.

9. Open up type tool drawing for dressing purpose– if any.

Design & Development

Kingwell has an ongoing relationship with Xi'an Petroleum University and built up long term cooperation with China Aerospace Group for more than 10 years. Design Department is familiar with CAD and Pro-E facilities and has on rolls qualified & experienced engineers. Now, they are engaged in development of new products as required in the market place. Kingwell' products are validated in-house in a Test Well, a Sub-surface Type Test Facility with simulated well conditions up to 15000 psi Differential pressure , 400°F and Max 450°F.

Inspection and Test Facilities

We own the world-class facilities with professional laboratory technicians. The main facilities are Surface Testing (Hydraulic Testing Unit), high temperature heat treatment furnaces, API Gages (Master & Working), Profile Projector, tensile testing machine, pressure sensor and data acquisition system, Universal Testing Machine, Hardness Tester, Nitrogen Pump, Function Test Pump, Ultrasonic Thickness Tester etc. All the goods must be tested by several processes and must be qualified when packed.

The followings are some pictures of Test Facility

Product delivery

Payment:TT/LC:30% advance payment.70%before shipment

Warranty: Warranty period is 1 year after installation.

Origin: China

Minimum order: 1 set

Packaging: wood case or steel carton

Delivery Date: within 1-2 month(s) after receiving prepayment

Logo: KW, we can produce according to customer requirements.

Technical Documents: We can provide technical documents according to your requirements.

Additional service: Customers are served to test our products in our factory upon request.

The followings are some related items

Service

Kindly let me know if you have any interest or enquiry about our products. You are also always welcomed to come to our factory for a visit at your convenient time.

We will offer you a good price and show you our best service.