Layered Water Injection High Pressure Seal Inspection Instrument
A technology of layered water injection and seal inspection instrument, which is applied in the directions of measurement, wellbore/well components, earthwork drilling and production, etc., which can solve the problems of heavy workload, rework, and wire pulling, etc., so as to improve work efficiency and reduce workload , Reliable unblocking effect
Active Publication Date: 2015-09-09
PETROCHINA CO LTD
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Problems solved by technology
However, under the condition of high-pressure water injection (generally, water injection pressure above 40MPa is called high-pressure water injection), the sealing force is large, and it is easy to fail to seal or pull out the steel wire, and it is impossible to monitor the sealing state
The existing steel wire seal inspection instrument is to be lowered into the storage type dual-channel pressure gauge to realize the seal inspection test. After the packers in each interval are tested, they must be brought to the ground for data playback to judge the seal inspection. Therefore, the existing The wire seal inspection instrument needs to pull out the seal inspection plug from the underground and play it back on the ground to judge the sealing state of the packer. It cannot monitor the sealing state of the layered packer in real time, which is easy to cause rework and a large workload
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[0032] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.
[0033] Please refer to Figure 1 to Figure 8 , respectively figure 1 It is a schematic diagram of the overall structure of the layered water injection high-pressure seal inspection instrument of the present invention; figure 2 is a structural schematic diagram of the cable joint of the present invention; image 3 is a structural schematic diagram of the control mechan...
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The invention discloses a high-pressure examining seal instrument with a function of separated layer water injection. The high-pressure examining seal instrument comprises a support mechanism with retracting and releasing abilities, a sealing mechanism capable of expanding and contracting initiatively, a buffer mechanism, a butt joint controller, a piston pump for driving the sealing mechanism to expand and contract, a first sensor group for sensing position information, a drive motor for driving a transmission shaft to rotate, a second sensor group for measuring pressure, a control mechanism for transmitting a control signal and detecting a data signal, as well as a cable joint which are connected sequentially from bottom to top, wherein the control mechanism comprises a support plate and a circuit board; the circuit board is connected with the second sensor group, the drive motor, the first sensor group, the piston pump and the butt joint controller sequentially; the second sensor group comprises a pressure sensor and a sensor seat; and the pressure sensor is arranged in the sensor seat. The high-pressure examining seal instrument with the function of separated layer water injection can achieve examining seal operation of all packers in one well logging, can monitor the sealing state of the layered packers in real time on the ground, and can reduce the workload of an operator and improve the work efficiency.
Description
technical field [0001] The invention relates to the field of high-pressure layered water injection, in particular to a layered water injection high-pressure sealing tester. Background technique [0002] As we all know, the packer is an important downhole tool for water injection wells, and the sealing state of the packer directly affects the water injection effect. At present, steel wire seal inspection tools are usually used to inspect the sealing state of the packer. The existing steel wire sealing inspection tool relies on gravity to compress the cup to realize sealing, and the steel wire lifting tool realizes unsealing. However, under high-pressure water injection conditions (generally water injection pressure above 40MPa is called high-pressure water injection), the sealing force is large, and it is easy to fail to seal or pull out the steel wire, and it is impossible to monitor the sealing state. The existing steel wire seal inspection instrument is to be lowered int...
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IPC IPC(8): E21B47/10
Inventor 刘合裴晓含孙福超郑立臣杨清海高扬
Owner PETROCHINA CO LTD