A storage type displacement measuring instrument for formation fracturing pipe string
A technology for displacement measurement and fracturing pipe strings, which is applied in the directions of measurement, wellbore/well components, earthwork drilling and production, etc. It can solve problems such as failure to release fracturing pressure, economic loss, inaccurate displacement of pipe strings, etc., and achieve maintenance Easy maintenance, simple overall structure and high measurement accuracy
Active Publication Date: 2016-06-15
西安威盛电子科技股份有限公司
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Problems solved by technology
The displacement of the pipe string theoretically calculated is inaccurate, and the fracturing pressure cannot be released at the optimal position during the fracturing operation, resulting in unsatisfactory fracturing effects, resulting in great economic losses
Method used
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0029] Such as Figure 1(a) and Figure 1(b) As shown, the storage type formation fracturing string displacement measuring instrument of the present invention includes a fracturing string base 4, and an upper joint 1 and a lower joint 44 sleeved on the upper and lower ends of the fracturing string base 4, wherein, A pressure-resistant outer tube 12 is sheathed on the outer wall of the fracturing string base 4 along the lower end of the upper joint 1 , and interconnections are arranged sequentially from top to bottom between the socketed pressure-resistant outer tube 12 and the fracturing string base 4 . The pressure probe mounting seat 7, pressure sensor 9, battery assembly 10 and circuit board 11; under the pressure-resistant outer tube 12, a displacement measuring device including an upper arm 15 and a lower arm 21 is provided along the circ...
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The invention discloses a storage type stratum fracturing string shift measurement instrument. The storage type stratum fracturing string shift measurement instrument comprises a fracturing string base, an upper connector and a lower connector, wherein the upper connector and the lower connector are sheathed at the upper end and the lower end of the fracturing string base, a pressure resisting outer pipe is sheathed on the outer wall of the fracturing string base and along the lower end of the upper connector, and a pressure probe mounting base, a pressure sensor, a battery assembly and a circuit board, which are connected with one another, are sequentially arranged between the pressure resisting outer pipe and the fracturing string base which are connected in a sleeving way from the upper part to the lower part; a shift measurement device comprising an upper arm and a lower arm is arranged at the lower part of the pressure resisting outer pipe along the periphery of the fracturing string base; an arm unfolding device and an arm folding device are sequentially arranged at the lower part of the lower arm; a multi-pin socket for reading the measurement data of the instrument and a control switch for turning off / on the instrument are also arranged in the fracturing string base. Reliable experience data are provided for the formulation of a fracturing construction technology through the utilization of the measurement instrument as an underground stratum fracturing string shift measurement instrument which has the advantages of convenience in work and simplicity in operation and maintenance, so that the fracturing construction is more efficient and safer.
Description
technical field [0001] The invention relates to a downhole pipe string displacement measuring instrument, in particular to an oil well downhole storage type formation fracturing pipe string displacement measuring instrument. Background technique [0002] With the development of offshore and land horizontal oil well drilling and production, horizontal well downhole formation layered fracturing technology is becoming more and more mature. A large axial force causes the pipe string to produce a certain axial displacement along the casing wall. The displacement of the string calculated theoretically is inaccurate, and the fracturing pressure cannot be released at the optimal position during the fracturing operation, resulting in unsatisfactory fracturing effects and resulting in great economic losses. The key to the fracturing process is to detect the actual displacement of the fracturing string and compare and analyze it with the theoretically calculated displacement of the st...
Claims
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IPC IPC(8): E21B47/00
Inventor 任晓宁党书通
Owner 西安威盛电子科技股份有限公司
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