Technical Analysis This product has obtained the national patent. Patent No.: ZL200620167483.5 The shooting rod perforating is a simple and economical perforating method, and the application is more common. In the traditional process, perforating and pumping production are carried out separately, that is, perforating the oil layer first, then perforating the string, and then producing the string. If the formation pressure is relatively high, in order to prevent the blowout of the starting and the lower pipe string, the well is to be killed first, then the perforating pipe string and the lower production string. This not only increases the workload of work, increases the cost of operations, but also has the possibility of damage to the formation. In order to solve the above problems, Bohai Drilling Engineering Technology Institute, together with Dagang Oilfield Company Drilling and Production Research Institute, and Dagang Oilfield Company No.1 Oil Production Plant Institute of Geology, studied and designed a straight inclined well pump valve, that is, after casting the perforation, not The perforation string is pulled out, the straight inclined well pump valve core is injected from the tubing, and then the pump plunger is entered into the pumping production, thereby realizing the investment rod perforating and the pumping pumping oil production to be completed. Technology. This not only saves construction costs and shortens construction time, but also eliminates the need for killing after perforation, thereby avoiding the pollution caused by well killing to the formation and protecting the formation. The straight inclined well pump valve has been applied to 122 wells in Dagang and Other oil fields in China since it was put into operation in 2006. The successful rate has reached 100 wells and achieved good results. The column constitutes the casting rod perforation and the pumping pump produces a column The completed column structure (bottom up) Perforating gun + screen tube + positioning spool + straight inclined well pump valve housing + conventional pump pump cylinder +1 pipe + drainer + tubing + phonetic tubing to the wellhead. After the assembly tool is assembled according to the process string, it is lowered to a predetermined position in the well to be positioned to determine and correct the position of the perforating gun. Then throw a rod from the tubing and detonate the perforation gun perforation. The pressure tester measures the pressure. Put the valve core assembly from the tubing and pressurize it from the ground by 10 MPa to enter the straight inclined well pump valve housing and lock 111, and the lower pump plunger and sucker rod are put into production. Straight inclined well valve structure straight inclined well pump valve structure see it consists of two parts of the housing and valve core assembly. The shell consists of an upper and lower joint, a locking device, a seal, a Retaining Ring, etc.; the valve core assembly is represented by a valve cover, a valve seat, a valve seat, and a vertical straight inclined well pump valve structure; 2 valve cover; 3 ball ball; 4 Valve seat; 5O-ring seal; 6-seal; 7 lower cone; 8 lock assembly; 9 lower joint; 10 retaining ring 2. Structural features The seal part and the lock part of the valve are installed in the valve Within the housing, it can be avoided during the downhole process to ensure that the two components work reliably. The sealing part adopts O-shaped seals, special-shaped seals and Teflon sealing to improve the reliability of the seal. The upper and lower joints of the shell adopt thread connection of the oil pipe, which improves the tensile performance and sealing performance of the shell. The pump valve is small and the structure design is reasonable and ingenious. Connect the valve housing of the pump to the lower end of the pump cylinder of the pump (remove the fixed valve part of the pump), and follow the construction string down to the design position in the well. After the perforation, put the valve core assembly from the well tubing. The valve core assembly enters the shell under the action of its own weight and is pressurized from the ground by 10 MPa, so that the valve core assembly is completely in place. At this time, the locking device of the housing is stuck in the groove of the valve core assembly, so that the valve core assembly is locked and cannot be ascended. At the same time, the retaining ring at the bottom of the housing blocks the valve core assembly to prevent it from descending, so that it is fixed at In the housing, it functions as a conventional oil pump fixed valve. The non-metallic seal inside the shell is sealed with the outside of the valve core assembly to prevent the liquid and gas in the upper part from leaking. 57mm, total length 455mm, seated at pressure 10MPa Both ends of the Screw 44mm Pump valve Maximum outside diameter 107mm Inside diameter 44mm, Total length 445mm, Sit into pressure 10MPa Both ends Type of thread 73mm (2 in.) TBG. Type + 73mm (inches) TBG The above three types of pump valves are suitable for oil wells with perforating rods. Field Application and Benefit Analysis The straight inclined well pump is mainly applied in Wangguantun, Gangdong, and Banqiao areas of Dagang Oilfield. Due to the high formation pressure in the above areas, if the perforation string is used after the perforation, the perforation string is required to be well-pressed if the conventional perforation process is adopted. This will not only increase the operation cost and the construction time, but may also cause pollution to the formation. The use of Well 27-44 as an example to illustrate the application of straight inclined well pump valves. -50 fault block, well depth 2 457.52459.2m, perforation method for shotgun perforation, construction date June 7, 2006. The construction steps are as follows: 1 Lower 73mm tubing bottom pass gauge to open the well to the bottom of the artificial well (2 583m) 2 perforation, pumping pump production once completed the column, perforation according to design requirements, adjust the column with N80, h3mm plus Thick section; 3 from the tubing input 32 iron bar ignition; 4 from the wellhead tubing into the valve core assembly, open the pump valve assembly to the specified position, pressurized to 10MPa seat valve assembly, voltage regulator 30min The pressure does not drop, indicating that the valve core assembly seal is qualified; 5 down into the 44mm pump pump plunger and rod production. The well construction lasted 3 days after 2 days of trial production, and the production was stable. This shows that all indicators of the straight inclined well pump valve meet the design requirements. In order to ensure the reliability of the pump valve, after putting the valve core assembly into the wellhead oil pipe, pressurize the pressure from the ground 10MPa for 30min. The pressure does not drop; the valve core assembly must be kept clean and free from corrosion and bump; the valve core assembly is When entering the wellhead tubing, the following cone must be at the lower end, and the valve cover should be at the top end. Do not invert the input. After the application of the straight inclined well pump valve, each well can reduce the cost of the perforating string process, the well killing process, and the well fluid cost totaling 35,000 yuan. The cost of each straight inclined well pump valve is 0.2 million yuan, and each well can be saved. The cost is 33,000 yuan. In addition, pollution caused by well killing may be avoided. The pump valve has applied 122 wells on site since 2006, and the success rate is 100%, which has achieved good application results. Conclusion The composition and locking device of the straight inclined well pump valve are all placed on the valve core assembly and are thrown into the housing along with the valve core assembly. In order to avoid the problem that the seal composition and the locking device are worn out due to the inclination of the well, the method of placing the sealing component and the locking device in the housing and going down with the housing into the well is adopted, thereby ensuring the success rate of field application. The application of the straight inclined well pump valve formed the pipe column technology for the combination of the cast rod perforation and the production of the pump, due to the cancellation of the traditional process (turning to page 107) with a diameter of 32 mm and a hook lifting speed of 0.21.2 m/s. Test and application derrick load (2250kN) derrick load test was conducted at Nanyang Erji Group 1 test site. The maximum load of the single machine is 1800kN, and the maximum load of the double-motor vehicles is 2 2501N, which meets the requirements of the API and petroleum industry standards. The test was conducted by finite element analysis. The simulation condition is no hook load, full standing, wind speed 110km/h (gravity and dynamic load coefficient of structure and accessories is 1.1), 0 4590 positive blowing, oblique blowing and side blowing. In this condition, the derrick stability discriminating coefficient is maximum 0.987 63 security. When the winch, gearbox and turntable box are continuously idle tested, the temperature of the moving parts is less than 80C during each operation of the gears, the temperature of the lubricant is lower than 70q, the temperature of the water is lower than 80c, and the temperature rise of the bearing is lower than 40C. The operation shall be steady and not allowed. There is impact noise and uneven noise. The noise under normal working conditions must not exceed 5min. The pressure drop should not exceed 0.03MPa. When the hydraulic system pressure is 21 and 14MPa, pressure drop and leakage are not allowed for 5min. Actuator and component actions are reliable, consistent with the nameplate designation, etc. 13. Z40CZ(B) drilling rig was successfully developed in oilfields in Xinjiang, Jidong, Shandong and other regions, drilling an average of 20d wells, and Without any accident, it was well received by users. Among them, two drilling rigs went to Xinjiang from Henan in October 2006, and then rushed from Xinjiang to Jidong Oilfield for drilling. The transportability was good and the transportation cost was nearly 200,000 yuan for the users. The Z40CZ (B) vehicle-mounted drilling rig has excellent transport performance and can not only transport short distances between oil wells, but also can travel long distances. This type of drilling rig is easy to install. The maximum load of drilling rigs from drilling floor to drilling is less than 3h. The maximum load of drilling rigs is 2250kN, and the load test sometimes reaches 2600kN. The finite element analysis results show that the wind resistance capacity of drill rigs is 110kn/h when Manganese is no load. The nominal depth of drilling is 127mm drill pipe 3200m, so that 114mm drill pipe 4 standard and the requirements of the oil industry standards. Hexagon Socket Head Cap Screw ,Hexagon Socket,Hex Socket Head Cap Screw ,Socket Head Screws Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com
Perforating and pumping pumps to produce a straight inclined well pump valve
Core Tip: Technical Analysis This product has obtained national patent. Patent No.: ZL200620167483.5 Shooter Perforation is a simple and economical perforating method, and its application is more common. In the traditional process, perforating and pumping are performed separately, that is, the oil layer is perforated first, and then the perforated string is produced.