High-seal leakproof oil production wellhead device
A wellhead device and anti-leakage technology, which is applied in the direction of wellbore/well valve device, sealing/package, earthwork drilling and production, etc., can solve the problems of poor sealing effect, impossibility, oil production operation, etc., and achieve superior sealing performance, Effect of long service life and improved efficiency
Inactive Publication Date: 2015-06-17
JIANGSU TIANTAI VALVE CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the sealing effect of the oil production wellhead device in the prior art is not good, and the follow-up oil production operation cannot be directly carried out, to overcome the above-mentioned deficiencies in the prior art, and to provide a highly sealed and anti-leakage oil production wellhead device
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] A highly sealed and anti-leakage oil production wellhead device is composed of a tubing head part and a Christmas tree part. The oil pipe head part includes a plug 1, a threaded flange 2, a flat gate valve 3, a stud bolt 4, a nut 5, a threaded bolt 6, a pipe head cross 7, a pressure gauge 8, a stop valve 9, and a gauge joint 10. Gasket ring 11, stud bolt 12, nut 13, gasket ring 14, tubing hanger 15, top wire pressure cap 16, lower packing pad 17, packing 18, upper packing pad 19, top wire 20, double male short Connected to 21, the part of the Christmas tree includes a conversion flange 24, a gasket ring 25, a threaded bolt 26, a nut 27, a flat gate valve 28, a stud bolt 29, a small cross 30, a plug 31, and a threaded flange 32. The needle throttle valve 33 is characterized in that the threaded flange 2, the plug 1, and the meter joint 10 are threadedly connecte...
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The invention provides a high-seal leakproof oil production wellhead device which is composed of a tubing head part and a Christmas tree part. Nine flat gate valves are arranged, two needle type throttle valves are arranged, and sealing gasket rings and threaded flanges are arranged among the flat gate valves and between the flat gate valves and the needle type throttle valves respectively and are fastened through double-end bolts or threaded bolts and nuts. A stop valve is used for controlling and protecting a pressure meter and can also be used as a device and used for replacing the pressure meter. Three flat gate valves are arranged on a Christmas tree channel and serve as the main flat gate valves. The channel can be intercepted by closing any one of the flat gate valves. In the using process of the flat gate valves and the needle type throttle valves on both wings of a Christmas tree, a single wing is usually used. The high-seal leakproof oil production wellhead device has the advantages of being convenient to mount, safe, reliable, excellent in sealing performance, resistant to wear and corrosion, long in service life and the like and can be directly used for normal oil production, efficiency is improved, and a positive role is played in safe production and yield increasing and stabilizing of an oil field.
Description
technical field [0001] The invention relates to the field of oil and gas wellhead devices of oilfield machinery, in particular to a high-sealing and anti-leakage oil production wellhead device. Background technique [0002] With the prolongation of oilfield development process and production time, the workload of various technological measures of oil wells is increasing day by day. Wellhead devices are important equipment to ensure the normal production of oil wells, especially although there are many types of wellhead devices for oil production, their structures are also different. However, as the number of times of use increases, its shortcomings become more and more prominent. Its parts are often damaged and difficult to maintain, and it does not have a good sealing structure, which is easy to cause leakage accidents and cannot reliably perform multiple processes. Short service life increases the mining cost of the enterprise. After completing the fracturing and acidizi...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B33/03
CPCE21B33/03E21B34/02
Inventor 顾祝明
Owner JIANGSU TIANTAI VALVE CO LTD