Oil and gas well packer sealing performance parameter testing device and method
A technology of sealing performance and testing device, which is applied in the testing of fluid tightness, testing of machine/structural components, measuring devices, etc., can solve problems such as seal failure of packers, and achieve low cost, convenient operation and simple device structure. Effect
Pending Publication Date: 2021-10-29
SOUTHWEST PETROLEUM UNIV
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[0006] The purpose of the present invention is to propose a test device and method for the sealing performance parameters of oil and gas well packers to solve the problem of packer sealing failure in the actual oil and gas production process, especially for deep wells, ultra-deep wells and large-scale fracturing Shale gas well
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[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0019] As shown in the accompanying drawings, the present invention proposes a test device for sealing performance parameters of oil and gas well packers. Cylinder 4, high-precision strain gauge 5, support ring 6, soluble pin 7, first pipeline and valve 8, internal thread 9, bench 10, blind hole 11, lower anti-protrusion ring 12, second pipeline and valve 13, Pressure gauge 14, lower ratchet 15, upper ratchet 16, central tube 17, slot 18, bolt 19, external thread 20, pressure chamber 21, effective contact length L i 22. Among them, the inner wall of the steel sleeve 1 has upper ratchet teeth 16, and under the action of the pressure testing machine, the upper anti-outburst ring 2 squeezes the packer rubber tube 4 to realize setting; Body 3 is composed of blind hole 11 with internal thread 9, high-precision strain gauge 5, pressure gauge 14, second pipeline and valve ...
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The invention discloses an oil and gas well packer sealing performance parameter testing device and method. The device mainly comprises a cavity, a packer rubber sleeve, a high-precision strain gauge, a supporting ring, a soluble pin, an internal thread, a blind hole, a lower outburst prevention ring, a lower ratchet, an upper ratchet, a central tube, a clamping groove, a bolt, an external thread, a pressure-bearing cavity, and an effective contact length, the soluble pin can realize controllable dissolution, the axial positioning of the supporting ring on the lower outburst prevention ring is relieved, and the rebounding and automatic unsealing of the rubber sleeve of the compression packer are realized; based on the device and the method, the setting process of the packer rubber sleeve can be effectively simulated, and the setting mechanical behavior and the sealing performance parameter of the packer rubber sleeve can be accurately tested, so that under different axial compression distances, the contact stress and distribution, the effective contact length, the packing pressure, the sealing energy and the change rule between the packer rubber sleeve and the inner wall of the simulation sleeve are obtained and provide theoretical support for research on the sealing performance of packers of deep wells, ultra-deep wells and large-scale fractured shale gas wells.
Description
technical field [0001] The invention relates to the technical field of oil and gas well drilling and production engineering, in particular to a testing device and method for sealing performance parameters of an oil and gas well packer. [0002] technical background [0003] The packer is a downhole sealing tool in an oil field, which seals the upper and lower fluids by sealing the annulus between the tubing and the casing. The core component of the packer is the rubber sleeve, and the sealing performance of the rubber sleeve directly affects the reliability and completion quality of the packer’s downhole work. Therefore, ensuring the safe and effective work of the packer is the key to ensuring the safe and efficient development of oil and gas wells . In the process of exploration and development of oil and gas wells, the problem of packer sealing failure is common, especially in deep wells, ultra-deep wells and large-scale fractured shale gas wells. Therefore, how to evalua...
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Login to View More IPC IPC(8): G01M3/28
CPCG01M3/2892
Inventor 范云婷邓宽海赵倩林元华彭阳谢鹏飞杨明庆
Owner SOUTHWEST PETROLEUM UNIV