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CN-121675835-B - Integrated device and method for measuring production and fracturing by liquid pumping in horizontal well clustering section

CN121675835BCN 121675835 BCN121675835 BCN 121675835BCN-121675835-B

Abstract

The invention relates to the technical field of oil and gas field fracturing exploitation, in particular to a device and a method for measuring the production and fracturing of horizontal well clustering section liquid pumping. The technical scheme is that the multi-nozzle pressure-controlled switch jet pump is connected with a first packer through an oil pipe and is put into a casing pipe under the well, a production measuring and fracturing control valve and a water hammer monitor are connected in a horizontal section through the oil pipe, and the production measuring and fracturing control valve and the water hammer monitor are positioned between a second packer and a third packer. The multi-nozzle pressure-controlled switch jet pump is matched with the storage type underground jet pump production measuring pump core, so that the data of the formation production can be measured by pumping liquid from the horizontal well clustering section, the fracturing construction improvement can be realized on the corresponding cluster section needing improvement by moving the positions of the production measuring and fracturing control valve and the water hammer wave monitor, meanwhile, the water hammer wave data can be measured in a short distance, the functions of pumping liquid production measuring and fracturing construction can be completed by one-pass construction pipe column, the construction cost is low, and the measurement precision is high.

Inventors

  • ZHANG JINGNAN
  • GAO JUNMIN
  • CHEN WEI
  • ZHANG GUANGQING
  • ZHANG RUI
  • CHEN CHUNSHENG

Assignees

  • 山东成林石油工程技术有限公司

Dates

Publication Date
20260505
Application Date
20260211

Claims (9)

  1. 1. The device is characterized by further comprising a multi-nozzle pressure-controlled switch jet pump (2), a first packer (3), a second packer (4), a production measurement and fracturing control valve (5), a water hammer monitor (6), a third packer (7), a plug (8) and a storage type underground jet pump production measurement pump core (10), wherein the multi-nozzle pressure-controlled switch jet pump (2) and the first packer (3) are connected through the oil pipe (1) and are placed in a casing (9) in the underground, the multi-nozzle pressure-controlled switch jet pump (2) and the first packer (3) are positioned at the lower part of a vertical section, the second packer (4), the production measurement and fracturing control valve (5), the water hammer monitor (6) and the third packer (7) are connected through the oil pipe (1), the production measurement and fracturing control valve (5), the water hammer monitor (6) are positioned between the second packer (4) and the third packer (7), the plug type underground jet pump (10) is placed in the underground jet pump core (10) along the measurement plug type underground jet pump when the plug (8) is installed in a subsection mode of the oil pipe (1); The utility model provides a fracturing control valve, survey is produced and fracturing control valve (5) is including control valve assembly (5.1), control valve spring (5.2), slide valve (5.3), stratum fluid import (5.4), shear pin (5.5), lower sliding sleeve (5.6), fracturing fluid export (5.7), lower baffle ring (5.8), control valve lower clutch (5.9), control valve upper clutch (5.10), spring fixing base (5.11), control valve assembly (5.1)'s upper end is equipped with control valve upper clutch (5.10), and the lower extreme is equipped with control valve lower clutch (5.9), spring fixing base (5.11), control valve spring (5.2) and slide valve (5.3) are installed in proper order to the upper inner chamber of control valve assembly (5.1), realize the switch cooperation through stratum fluid import (5.4) that slide valve (5.3) and control valve assembly (5.1) outer wall were equipped with, lower sliding sleeve (5.6) are installed to control valve assembly's well lower inner chamber, and lower sliding sleeve (5.6) are installed through control valve assembly (5.1) and are installed in the upper and are cut off in control valve assembly (5.7.1) of the upper and lower sliding sleeve (5.1) of control valve assembly.
  2. 2. The device for measuring the production and fracturing of the horizontal well clustering section liquid pumping is characterized in that the multi-nozzle pressure-controlled switch jet pump (2) comprises a pump barrel (2.1), a diffusion cavity (2.2), a mixing cavity (2.3), a negative pressure cavity (2.4), a nozzle (2.5), a power liquid inlet (2.6), a switch valve (2.7), a spring (2.8), a lower connector (2.9) and a central cavity (2.10), the central cavity (2.10) is arranged in the center of the pump barrel (2.1), a plurality of jet injection units which are formed by sequentially connecting the diffusion cavity (2.2), the mixing cavity (2.3), the negative pressure cavity (2.4) and the nozzle (2.5) are arranged at the middle upper part of the pump barrel (2.1), a plurality of power liquid inlets (2.6) are arranged on the outer wall of the lower side of the pump barrel (2.1), the lower connector (2.9) is arranged at the bottom end of the pump barrel (2.1), the switch valve (2.7) is arranged at the lower end of the lower part of the nozzle (2.5), and the switch valve (2.7) is arranged at the inner side of the power liquid inlet (2.7).
  3. 3. The device for measuring the production and fracturing of the horizontal well clustering section liquid pumping according to claim 2, wherein the storage type underground jet pump production measuring pump core (10) comprises a salvaging head (10.1), a pump core main body (10.2), a battery (10.3), a storage shell (10.4) and a combined sensor (10.5), wherein the salvaging head (10.1) is installed at the upper end of the pump core main body (10.2), the storage shell (10.4) is installed at the lower end of the pump core main body, the battery (10.3) is installed in an inner cavity of the pump core main body (10.2), the storage is installed in an inner cavity of the storage shell (10.4), and the combined sensor (10.5) is installed at the lower end of the storage shell (10.4).
  4. 4. The device for measuring the production of the liquid by the horizontal well clustering section and fracturing the integrated device is characterized in that the outer diameter of the pump core main body (10.2) is larger than the outer diameter of the storage shell (10.4), the outer diameter of the storage shell (10.4) is larger than the outer diameter of the combined sensor (10.5), when the liquid is pumped and the production is measured, the pump core (10) is put into the storage type underground jet pump for measuring the production, and the lower end of the pump core main body (10.2) is in contact and matched with the upper end of the central cavity (2.10) of the pump cylinder (2.1), so that the storage type underground jet pump for measuring the production is seated in the multi-nozzle pressure-controlled switch jet pump (2) for measuring data, and the data are stored in the storage.
  5. 5. The horizontal well clustering section liquid pumping, production measuring and fracturing integrated device according to claim 4 is characterized in that the outer diameter of the middle part of the control valve assembly (5.1) is smaller than the outer diameters of two ends, a plurality of sealing rings are arranged on the outer wall of the lower sliding sleeve (5.6) and are used for being in contact fit with the inner walls of the control valve assembly (5.1) on the upper side and the lower side of the fracturing liquid outlet (5.7), and the lower end of the lower sliding sleeve (5.6) is provided with a cylindrical plug connector (5.6.1) and is used for being in fit connection with the lower baffle ring (5.8).
  6. 6. The device for measuring the production and fracturing of the horizontal well clustering section liquid pumping is characterized in that the water hammer monitor (6) comprises a monitor shell assembly (6.1), a pressure sensor module (6.2), a data memory module (6.3), a battery module (6.4), a monitoring hole (6.5), an upper monitor joint (6.6) and a lower monitor joint (6.7), the upper end of the monitor shell assembly (6.1) is provided with the upper monitor joint (6.6), the lower end of the monitor shell assembly is provided with the lower monitor joint (6.7), the pressure sensor module (6.2), the data memory module (6.3) and the battery module (6.4) are installed in the inner cavity of the monitor shell assembly (6.1), the outer wall of the monitor shell assembly (6.1) is provided with a plurality of monitoring holes (6.5), the data memory module (6.3) and the battery module (6.4) are communicated with the pressure sensor module (6.2) in the inner cavity of the monitor shell assembly (6.1), and the data memory module (6.3) and the battery module (6.4) are isolated from the pressure sensor module (6.2).
  7. 7. The device for measuring the production and fracturing of the horizontal well clustering section liquid suction and measuring the production is characterized in that a storage type downhole jet pump production measuring pump core (10) is lifted out of a ground wellhead through a fisher (11), the fisher (11) comprises a fisher cylinder (11.1), a leather cup (11.2), a fisher spring (11.3), an elastic claw (11.4), a movable supporting body (11.5) and a guiding and limiting head (11.6), a guiding and limiting head (11.6) is arranged at the lower end of the fisher cylinder (11.1), a leather cup fixing body (11.7) is arranged at the upper end of the fisher cylinder (11.1), a leather cup (11.2) is arranged on the outer wall of the leather cup fixing body (11.7), a fisher spring (11.3) is arranged in an inner cavity of the fisher cylinder (11.1), the movable supporting body (11.5) and the elastic claw (11.4) is arranged between the upper portion of the movable supporting body (11.5) and the lower end of the leather cup fixing body (11.7), and the elastic claw (11.4) is arranged at the lower end of the fisher cylinder (11.4) in a position, and is connected with the lower end of the fishing pump core (11.4) at the lower end of the fishing side of the fishing pump core (11.4).
  8. 8. The horizontal well clustering section liquid pumping, production measuring and fracturing integrated device is characterized in that 3-6 groups of elastic claws (11.4) are adopted to form a cylindrical structure, and the outer diameter of the movable supporting body (11.5) is smaller than the inner diameter of the inner wall of the fisher barrel (11.1).
  9. 9. The method for using the horizontal well clustering section liquid pumping, production measuring and fracturing integrated device according to claim 8 is characterized by comprising the following steps: 1. the multi-nozzle pressure-controlled switch jet pump (2), the first packer (3), the second packer (4), the production measurement and fracturing control valve (5), the water hammer monitor (6) and the third packer (7) are connected through the oil pipe (1), the second packer (4), the production measurement and fracturing control valve (5), the water hammer monitor (6) and the third packer (7) are sent to a horizontal section along the casing (9) and then the first packer (3), the second packer (4) and the third packer (7) are set; 2. When the fluid pumping and production measurement is carried out, a storage type underground jet pump production measurement pump core (10) is thrown into an oil pipe (1) at a ground wellhead, the storage type underground jet pump production measurement pump core (10) downwards enters the upper end of a multi-nozzle pressure-controlled switch jet pump (2) along the oil pipe (1), the storage type underground jet pump production measurement pump core is seated at the upper end of a central cavity (2.10) of a pump barrel (2.1), a combined sensor (10.5) is inserted into the central cavity (2.10), then, power fluid is downwards injected into the annulus of the oil pipe (1) and a sleeve (9) at the ground wellhead along the annulus of the oil pipe (1) and the sleeve (9), after the pressure of the power fluid is larger than that of a spring (2.8), a switch valve (2.7) downwards moves to open a power fluid inlet (2.6), the power fluid enters along the open power fluid inlet (2.6) and is sprayed out of the nozzle (2.5), so that stratum fluid production fluid of a corresponding cluster section between a second packer (4) and a third packer (7) is driven to enter the inner cavity (2.10) of the multi-nozzle pressure-controlled switch jet pump (2.5) along the open production measurement pump and the pressure-controlled switch core (5), and the pressure of the pressure-controlled pump is discharged into the mixed fluid (2.10) of the mixed fluid entering the fluid inlet (2.2.10) of the oil pipe (2.5) along the pressure-controlled pump (2.5) at the ground wellhead after the pressure-side of the pressure-controlled pump (2.5) and the pressure-controlled pump section, the pressure, flow parameters and data of stratum production fluid produced under different production pressure differences are stored; 3. After the formation production test of one cluster section is completed, the oil pipe (1) is upwards pumped by the first packer (3), the second packer (4) and the third packer (7), the production testing and fracturing control valve (5) and the water hammer wave monitor (6) of the horizontal section are driven to reach the perforation positions of the adjacent cluster section, the first packer (3), the second packer (4) and the third packer (7) are set, power fluid is repeatedly injected for pumping, the temperature, the pressure and the flow parameters of the formation production of the second cluster section are continuously monitored and recorded, and the step-by-step repeated operation is carried out, so that the sectional production testing of all underground perforation fracturing cluster sections is realized until the measurement is completed; 4. Then throwing the fisher (11) into the oil pipe (1) at the ground wellhead, moving the fisher (11) downwards until the fisher is seated at the top of the storage type underground jet pump production measuring pump core (10) and grabs the fisher head (10.1), then injecting power fluid downwards along the annular space of the oil pipe (1) and the sleeve (9) at the ground wellhead, after the pressure of the power fluid is larger than that of the spring (2.8), moving the switch valve (2.7) downwards to realize the opening of the power fluid inlet (2.6), enabling the power fluid to enter the nozzle (2.5) along the opened power fluid inlet (2.6) for accelerating injection, pushing the leather cup (11.2) at the upper side of the fisher (11) to go upwards after the extracted stratum production fluid and the power fluid are mixed, so that the fisher (11) and the storage type underground jet pump production measuring pump core (10) are lifted to the ground together, reading the test data of the storage type underground jet pump production measuring pump core (10) on the ground, and carrying out data contrast analysis to determine the position, position and fracturing parameters of a needed construction section to be subjected to fracturing treatment; 5. Deblocking the first packer (3), the second packer (4) and the third packer (7), dragging the oil pipe (1) to drive the production measuring and fracturing control valve (5) and the water hammer monitor (6) of the horizontal section, enabling the production measuring and fracturing control valve (5) to be opposite to the cluster section needing fracturing modification, then setting the first packer (3), the second packer (4) and the third packer (7), injecting fracturing fluid into the oil pipe (1) at a ground wellhead, enabling the fracturing fluid to pass through a central cavity (2.10) of the multi-nozzle pressure-controlled switch jet pump (2) along the oil pipe (1), at the moment, enabling the power fluid inlet (2.6) to be in a closed state, enabling the fracturing fluid to continuously flow downwards to the production measuring and fracturing control valve (5) of the horizontal section, enabling the stratum fluid inlet (5.4) to be in a closed state under the action of the sliding valve (5.3), enabling the lower sliding sleeve (5.6) to drop downwards to be at a position of a lower retaining ring (5.8) when the pressure of the fracturing fluid is larger than the shearing force of the shearing pin (5.5), enabling the fracturing fluid outlet (5.7) to pass through a central cavity (2.10) of the multi-nozzle pressure-controlled switch jet pump (2), enabling the fracturing fluid to pass through the cluster pressure-controlled switch jet pump (1), and further recording the fracturing fluid to be in a water hammer monitor and the water hammer monitor, and further recording the fracturing fluid, and the fracturing fluid flow to be in a water jet flow state, the re-fracturing construction transformation of different cluster sections can be completed.

Description

Integrated device and method for measuring production and fracturing by liquid pumping in horizontal well clustering section Technical Field The invention relates to the technical field of oil and gas field fracturing exploitation, in particular to a device and a method for measuring the production and fracturing of horizontal well clustering section liquid pumping. Background With the development scale of horizontal wells such as low permeability, unconventional oil and gas fields, shale oil and gas fields and coal bed gas fields and the like expanding, the multi-cluster-stage fracturing well of the horizontal well is rapidly increased, and the multi-cluster-stage fracturing of the horizontal well is a key technology for the efficient development of low permeability, unconventional oil and gas reservoirs (such as shale gas and tight oil), and is characterized in that a horizontal well section is segmented and provided with a plurality of perforation clusters, a horizontal well shaft is divided into a plurality of independent fracturing sections (usually more than 15-30 sections) by means of bridge plugs, sliding sleeves and the like, and 3-6 perforation clusters are arranged in each section. During fracturing, high-pressure fluid is simultaneously cracked from a plurality of clusters, a dense and staggered fracture system is manufactured, the volume transformation (SRV) of a reservoir is realized, oil gas can rapidly flow into a shaft from all directions, a complex three-dimensional fracture network is formed, and therefore the oil gas productivity and the recovery ratio are greatly improved. However, the method and the device for testing the condition of the artificial cracks and the actual output condition manufactured by each fracturing cluster section still lack economy and effectiveness, so that most horizontal wells can only adopt a well completion production mode of fixed-interval perforation and general integrated production after segmented fracturing, and are limited by monitoring and evaluating means and instruments after fracturing, and the partial pressure of the multi-cluster sections, the quality of reservoir transformation and the equilibrium degree of the actual liquid production profile of the general integrated production horizontal well are not clear, the lower transformation measures are difficult to determine, and the actual utilization degree and the production speed of the reservoir are not high. The existing crack tracing test and dragging instrument is used for carrying out the oil saturation test and the liquid production profile test method, so that the accuracy and the credibility degree of the test result of the actual production profile are not high, and the test is long in time consumption and high in cost. Therefore, the existing multi-section fracturing well can only be put into production immediately after fracturing under the condition that the actual transformation effect of each section of fracturing cannot be judged, accurate and effective monitoring of the dynamic liquid production profile is difficult to carry out after production, the deep long-well section fracturing well cannot evaluate the quality and the productivity contribution rate of each cluster section crack, and the dynamic production evaluation under the variable production pressure difference of each cluster section cannot be carried out. Thus, the well section with poor fracturing effect is used to a low degree or basically unused, the well productivity is limited, and the unknowing waste of resources is caused. For wells which are produced by multi-stage fracturing for years, the actual production fluid profile is larger than the initial production stage difference due to the differences of reservoir heterogeneity and fracturing transformation effects and the underground dynamic changes, so that the problems of unclear productivity decrement, excessively fast yield decrement and excessively large difference of the utilization degree are also caused, more effective detection and test are also lacking, and the improvement of the recovery ratio is restricted. The tracer method, the microseism method and the existing accurate and reliable degree are low, the cost is high, the method still belongs to indirect calculation and comparison of fracturing and output effects, and the construction pipe column for the liquid production profile and the section selection transformation is difficult to realize integral construction, so that the method has the advantages of multiple construction procedures, long time consumption, easiness in pollution to a reservoir and high cost. At present, new methods and techniques which are more efficient, inexpensive and practical are not available. The patent number ZL202418512559 is limited to the sectional suction standard production and acidification treatment of the horizontal well, the quality of each fracturing crack cannot be evaluated, and the fracturing modification and