CN-121993100-A - Fracturing sliding sleeve system with electromagnetic tag signals and fracturing construction method

CN121993100ACN 121993100 ACN121993100 ACN 121993100ACN-121993100-A

Abstract

The invention relates to the technical field of oil and gas well fracturing completion, in particular to a fracturing sliding sleeve system with electromagnetic tag signals and a fracturing construction method. According to the invention, the passive electromagnetic tag is additionally arranged in the full-diameter sleeve sliding sleeve, the passive electromagnetic tag can be detected by the electromagnetic tag reader in the navigation shuttle, when in site construction, the navigation shuttle moves from a wellhead to a bottom hole in the sleeve under the hydraulic drive of the ground pumping equipment at the inlet end of the sleeve, the navigation shuttle can accurately position the position of the navigation shuttle by detecting electromagnetic tag signals in the sliding sleeve in the moving process, when the navigation shuttle reaches the target sliding sleeve, the navigation shuttle starts an expansion program, the outer diameter of the navigation shuttle is enlarged, the navigation shuttle is blocked on the inner wall of a piston of the target sliding sleeve so as to drive the piston cylinder of the sliding sleeve to move along the liquid flow direction, and the sand spraying hole of the sliding sleeve is opened, so that the inside and the outside of the sleeve are communicated, and further the fracturing construction of an oil and gas well pipeline with infinite grade, full-diameter, perforation-free and cable-free conveying is realized, and the fracturing construction efficiency of the oil and gas well is greatly improved.

Inventors

LI RENZHONG
XIE XIAOHUI
GU LIHUA
ZHANG WENJING
NIE YUANHAO
HE DONG

Assignees

中国石油化工股份有限公司
中国石油化工股份有限公司江汉油田分公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (10)

1. The fracturing sliding sleeve system with the electromagnetic tag signals is characterized by comprising an oil gas well sleeve (3) which is put into an underground oil gas reservoir, wherein a toe end sliding sleeve (17) is arranged at the tail end of the oil gas well sleeve (3), and the head end of the oil gas well sleeve is connected with ground pumping equipment; The method comprises the steps that a plurality of sand blasting holes (5) for fracturing construction of a target fracturing section are uniformly formed in the outer wall of the full-diameter sleeve sliding sleeve (1) along the circumferential direction, a marking cylinder (18) is fixedly arranged on the inner wall of the full-diameter sleeve sliding sleeve (1), a passive electromagnetic tag (6) is arranged in the marking cylinder (18), and a sliding sleeve piston (4) which is slidable is pre-arranged at the position, corresponding to the sand blasting holes (5), of the inner wall of the full-diameter sleeve sliding sleeve (1); the passive electromagnetic tag (6) is specifically any one of an RFID chip, a magnetic ring and a magnetic steel array; The navigation shuttle (2) comprises a soluble shell (11), an expandable connecting section (12) is arranged in the middle of the soluble shell (11), an expansion executing mechanism (14) is arranged in the expandable connecting section (12), an electromagnetic tag reader (13), a power module (15) and a processor module are further arranged in the navigation shuttle (2), and a temperature detection unit, a pressure detection unit and a data storage unit are integrated in the processor module.
2. The fracturing sliding sleeve system with electromagnetic tag signals, which is characterized in that a front sliding sleeve connecting section (7) and a rear sliding sleeve connecting section (10) are respectively arranged at two ends of the full-diameter sleeve sliding sleeve (1), a piston sliding cavity (8) is arranged in the middle of the full-diameter sleeve sliding sleeve (1), sand blasting holes (5) are uniformly formed in the outer wall of the piston sliding cavity (8) along the circumferential direction, and the sliding sleeve piston (4) is preloaded in the piston sliding cavity (8) at positions corresponding to the sand blasting holes (5) and used for closing the sand blasting holes (5).
3. A fracturing sliding sleeve system with electromagnetic tag signals according to claim 2, characterized in that the front connecting section (7) and the rear connecting section (10) of the sliding sleeve are respectively connected with oil-gas well casings (3) at the front end and the rear end of the full-diameter casing sliding sleeve (1), and the outer diameter of the sliding sleeve piston (4) is consistent with the inner diameter of the piston sliding cavity (8).
4. The fracturing sliding sleeve system with electromagnetic tag signals according to claim 2, wherein a limiting clamping groove (9) is formed at the joint of the piston sliding cavity (8) and the sliding sleeve rear connecting section (10), and a limiting clamping block (16) matched with the limiting clamping groove (9) is arranged at one end, close to the sliding sleeve rear connecting section (10), of the sliding sleeve piston (4).
5. A fracturing sliding sleeve system with electromagnetic label signals according to claim 2, characterized in that the marking cylinder (18) is fixedly arranged at one end, close to the front connecting section (7) of the sliding sleeve, in the piston sliding cavity (8), and the passive electromagnetic label (6) is arranged on the inner wall of the marking cylinder (18).
6. A fracturing sliding sleeve system with electromagnetic tag signals according to claim 1, characterized in that the electromagnetic tag reader (13), a power supply module (15) and an expansion actuator (14) are electrically connected with the processor module.
7. A fracturing sliding sleeve system with electromagnetic tag signals according to claim 6, characterized in that the outer diameter of said soluble housing (11) is smaller than the inner diameter of said sliding sleeve piston (4), said expansion actuator (14) being adapted to receive instructions from a processor module to drive said expandable joint (12) for outer diameter expansion.
8. A fracturing slide system with electromagnetic tag signals according to claim 7, characterized in that the outer diameter of said expandable joint (12) when unexpanded corresponds to the outer diameter of said dissolvable shell (11).
9. A method of oil and gas well pipeline fracturing construction employing the fracturing slide system of any one of claims 1 to 8, comprising the steps of: S1, installing a full-diameter sleeve sliding sleeve, namely installing a toe end sliding sleeve (17) at the tail end of an oil gas well sleeve (3), installing a plurality of full-diameter sleeve sliding sleeves (1) at preset positions in the middle of the oil gas well sleeve (3), wherein the installation positions of the full-diameter sleeve sliding sleeves (1) are in one-to-one correspondence with the positions of target fracturing sections of an oil gas well pipeline; s2, the oil gas well casing is put into the well, namely the oil gas well casing (3) and the matched parts after the sliding sleeve is installed are put into the well, and cement well cementation is completed; s3, pipeline pressure test, namely before fracturing construction, starting a sand blasting hole of the toe end sliding sleeve (17) to perform first-stage fracturing construction; S4, throwing the navigation shuttle (2) into the well from a wellhead, starting ground pumping equipment, and pumping the navigation shuttle (2) to move forward along the oil-gas well casing (3); S5, carrying out data identification communication on an electromagnetic tag reader (13) in a navigation shuttle and a passive electromagnetic tag (6) in a sliding sleeve where the navigation shuttle is currently located, judging the position of the navigation shuttle according to communication information, and when the navigation shuttle reaches the target sliding sleeve, sending a corresponding instruction to an expansion executing mechanism (14) by a processor module in the navigation shuttle so as to drive an expandable connecting section (12) of the navigation shuttle to expand and be blocked on the inner wall of a sliding sleeve piston (4) of the target sliding sleeve, and driving the sliding sleeve piston (4) to move along a piston sliding cavity (8) together under the driving of pumping pressure, and then starting a sand blasting hole (5) of the target sliding sleeve so as to carry out fracturing construction of the target fracturing section; S6, acquiring data of the fracturing process, namely acquiring temperature and pressure data in a pipeline in real time through a temperature detection unit and a pressure detection unit integrated by a navigation intra-shuttle processor module in the fracturing construction process, and storing the temperature and pressure data in a data storage unit; S7, repeating the steps S4-S6 until the fracturing construction of all the target fracturing stages is completed; And S8, dissolving and recycling the navigation shuttle, namely pumping a dissolving solution through a wellhead, dissolving a soluble shell (11) of the navigation shuttle, starting the whole well to put into production, enabling a processor module stored with detection data in the navigation shuttle to be discharged back out of the wellhead, and then reading the detection data at the ground end to analyze the fracturing effect.
10. The fracturing construction method of claim 9, wherein the data identification communication specifically comprises: 1) An electromagnetic tag reader in the navigation shuttle continuously sends out radio frequency signals; 2) The passive electromagnetic tag in the sliding sleeve where the navigation shuttle is currently positioned converts the received electromagnetic wave energy into electric energy, activates a chip in the electromagnetic tag, and sends identification code data stored in the electromagnetic tag chip to the electromagnetic tag reader; 3) The electromagnetic tag reader sends the identification code data to the processor module, and the processor module counts at the same time; 4) The processor module judges the serial number of the sliding sleeve where the navigation shuttle is currently located according to the current count value N, and sets the serial number of the target sliding sleeve corresponding to the target fracturing section as N, and then after the navigation shuttle passes through the sliding sleeve with the serial number of N-1, the processor module sends an instruction to the expansion executing mechanism to execute corresponding actions.

Description

Fracturing sliding sleeve system with electromagnetic tag signals and fracturing construction method Technical Field The invention relates to the technical field of oil and gas well fracturing completion, in particular to a fracturing sliding sleeve system with electromagnetic tag signals and a fracturing construction method. Background The staged fracturing is a necessary means for effectively developing low-permeability dense oil gas resources, and because the reservoir has poor dense physical properties, a large number of fracturing stages are needed to use reserves and release productivity, the number of fracturing stages is an important index for evaluating the fracturing operation efficiency, and the number of single-well fracturing stages is increased, so that the method is one of important means for increasing the gas well yield. The electromagnetic tag identification is an automatic identification technology, the working principle is that non-contact data communication is carried out between an electromagnetic tag reader and an electromagnetic tag, the aim of identifying a target is achieved, the structure is simple, the identification rate is high, and the electromagnetic tag identification method is widely applied to various industrial fields. The fracturing sliding sleeve is one of core components of the staged fracturing tool for the horizontal well and is a key point for influencing the staged number of the staged fracturing of the horizontal well. The conventional ball injection sliding sleeve process has the defects of limited fracturing series and incapability of fully reforming the stratum, and the technologies of pumping bridge plug, oil connection dragging fracturing and the like in the prior art can meet the requirements of the fracturing series, but have the limitations of discontinuous fracturing construction, long operation time, high cost and the like. Disclosure of Invention The invention aims to solve the technical problems of providing a fracturing sliding sleeve system with electromagnetic tag signals and a fracturing construction method, which can realize fracturing construction of an oil-gas well in a horizontal section with infinite level, full-diameter, perforation-free and cable-free conveying, greatly improve the fracturing construction efficiency of the oil-gas well, reduce the construction cost and improve the economic benefit. In order to solve the technical problems, the invention adopts the following technical scheme: 1. Fracturing sliding sleeve system with electromagnetic tag signals The invention provides a fracturing sliding sleeve system with electromagnetic tag signals, which comprises an oil and gas well sleeve 3 which is put into an underground oil and gas reservoir, wherein the tail end of the oil and gas well sleeve 3 is provided with a toe end sliding sleeve 17, and the head end is connected with ground pumping equipment; The outer wall of the full-diameter sleeve sliding sleeve 1 is uniformly provided with a plurality of sand spraying holes 5 for fracturing construction of a target fracturing section along the circumferential direction, the inner wall of the full-diameter sleeve sliding sleeve 1 is fixedly provided with a marking cylinder 18, a passive electromagnetic tag 6 is arranged in the marking cylinder 18, and a sliding sleeve piston 4 which can slide is arranged at the position of the inner wall of the full-diameter sleeve sliding sleeve 1 corresponding to the sand spraying holes 5 in advance; the passive electromagnetic tag 6 is specifically an RFID chip, a magnetic ring, a magnetic steel array, etc., and can have various forms; The navigation shuttle 2 comprises a soluble shell 11, an expandable connecting section 12 is arranged in the middle of the soluble shell 11, an expansion executing mechanism 14 is arranged in the expandable connecting section 12, an electromagnetic tag reader 13, a power module 15 and a processor module are further arranged in the navigation shuttle 2, and a temperature detection unit, a pressure detection unit and a data storage unit are integrated in the processor module. Further, the two ends of the full-diameter sleeve sliding sleeve 1 are respectively provided with a front sliding sleeve connecting section 7 and a rear sliding sleeve connecting section 10, a piston sliding cavity 8 is arranged in the middle of the full-diameter sleeve sliding sleeve 1, sand blasting holes 5 are uniformly formed in the outer wall of the piston sliding cavity 8 along the circumferential direction, and the sliding sleeve piston 4 is preloaded in the position, corresponding to the sand blasting holes 5, in the piston sliding cavity 8 and used for closing the sand blasting holes 5. Further, the front connecting section 7 and the rear connecting section 10 of the sliding sleeve are respectively connected with the oil-gas well casing 3 at the front end and the rear end of the full-diameter casing sliding sleeve 1, and the outer diameter of