CN-122014171-A - Single-section gun body in-situ rotary conversion bullet same-position abnormal perforating tool and operation method thereof

CN122014171ACN 122014171 ACN122014171 ACN 122014171ACN-122014171-A

Abstract

The invention relates to the technical field of oil-gas field exploration and development equipment, and discloses a single-section gun body in-situ rotary conversion bullet identical and abnormal perforating tool and an operation method thereof, wherein the single-section gun body in-situ rotary conversion bullet identical and abnormal perforating tool comprises a shell, an annular cavity is arranged on the shell, a plurality of pairs of through holes are oppositely arranged on two side walls of the annular cavity, and each pair of through holes are longitudinally distributed; the perforating gun comprises a shell, two bullet feeding parts, a rotary driving part, a plurality of piezoelectric microvalve modules, a control system, a rotary driving part, a zero-hole falling object, a single-pass tubular column, a perforation efficiency and a reservoir transformation effect, wherein the two bullet feeding parts are oppositely arranged on the shell, the rotary driving part is connected with the two bullet feeding parts, a plurality of bullet storage bins corresponding to second through holes, perforating bullets and pushing-out parts are arranged in the bullet storage bins, the piezoelectric microvalve modules are respectively arranged at the opposite through holes in the annular cavity and used for controlling the opening degree of the valve, the control system is in signal connection with the rotary driving part, the pushing-out parts and the piezoelectric microvalve modules, the perforating gun is simple in design and has no underground falling object, and double dynamic adjustment of variable energy and secondary phases can be realized by a single-pass tubular column, so that the perforation efficiency and the reservoir transformation effect are remarkably improved.

Inventors

HOU ZHAOKAI
HUANG SIYANG
ZHAO JIAZI
SUN XIAOFENG
YAN TIE
QU JINGYU
YAO DI
ZHOU YINGCAO

Assignees

东北石油大学

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (8)

1. The utility model provides a perforating tool of single section rifle body normal position revolved conversion bullet-homonymy abnormal perforating, includes the shell, its characterized in that is equipped with annular cavity on the shell, the both sides wall of annular cavity is equipped with a plurality of pairs of through-holes relatively, each pair the through-hole is vertically laid, this perforating tool still includes: The in-situ bullet changing module comprises two bullet feeding parts and a rotary driving piece, wherein the two bullet feeding parts are oppositely arranged in the shell, the rotary driving piece is connected with the two bullet feeding parts, a plurality of bullet storage bins corresponding to the through holes, perforating bullets arranged in the bullet storage bins and a pushing piece are arranged on each bullet feeding part, and the rotary driving piece is used for switching the correspondence between the two bullet feeding parts and the through holes; the piezoelectric micro valve modules are respectively arranged at opposite through holes in the annular cavity and used for controlling the opening degree of the valve so as to carry out differential adjustment of perforation energy; And the control system is in signal connection with the rotary driving piece, the pushing pieces and the piezoelectric micro valve modules and is used for controlling the rotation of the rotary driving piece, the pushing of the pushing pieces and the valve opening adjustment of the piezoelectric micro valve modules.
2. The perforating gun of single-section gun body in-situ rotation converting bullet-parity-abnormal perforating as in claim 1, wherein each piezoelectric microvalve module comprises an annular amplitude transformer, an anode piezoelectric ceramic and a cathode piezoelectric ceramic, wherein the anode piezoelectric ceramic and the cathode piezoelectric ceramic are axially and sequentially arranged on the annular amplitude transformer respectively and are used for axially stretching and contracting under the action of voltage so as to realize the adjustment of the opening degree of the valve.
3. The single segment gun body in situ rotation conversion charge-co-located abnormal perforating gun of claim 1, wherein the rotary drive comprises: The middle shaft is longitudinally and rotatably connected in the shell; The bullet supply parts are arranged at two ends of the plurality of center connecting rods, and each bullet supply part is hinged with the end parts of the plurality of center connecting rods; the driving mechanism is connected with the middle shaft and used for driving the middle shaft to rotate.
4. The perforating gun of claim 1, wherein the two bullet feeding parts are side connecting shafts, the opposite sides of the two bullet feeding parts are provided with mounting grooves, the bullet storage bin is arranged at the mounting grooves, and the pushing-out piece is a hydraulic cylinder arranged in the mounting grooves.
5. A single segment gun body in situ rotation converting bullet-parity abnormal perforating gun as in claim 3 wherein the driving mechanism is a hydraulic motor disposed above the central shaft, said hydraulic motor being connected to the central shaft via a bevel gear mechanism for driving the central shaft to rotate.
6. The perforating gun of claim 1, wherein a locator is disposed in the housing and is in signal communication with the control system.
7. The perforating gun of single-section gun body in-situ rotation bullet-parity abnormal perforating as claimed in claim 1, wherein the side edges of the bullet supply parts are provided with cables, each cable is connected with a plurality of perforating bullets on the corresponding side, a detonating tube is arranged above the side edge of the through hole in the shell, the detonating tube corresponds to the cables, the top end of the detonating tube is connected with a detonation sequence assembly, and the detonation sequence assembly is in signal connection with a control system.
8. A method of operating a single-segment gun body in-situ rotary conversion bullet co-located abnormal perforating gun, based on the single-segment gun body in-situ rotary conversion bullet-co-located abnormal perforating gun of claim 1, comprising the steps of: the perforating gun of a single section is lowered into the well along with the pipe column for one time and positioned at the target reservoir depth; The piezoelectric micro valve module is controlled to be opened to a first opening degree through the control system according to the requirement, the push-out piece pushes the perforating bullet out of the through hole, and then the perforating bullet is detonated, so that the generated first jet energy forms a first phase pore canal in the casing stratum; Releasing pressure after the first perforation is finished, and driving the two bullet supply parts to rotate in the shell by the control system through the rotary driving part so that a bullet storage bin containing unexplosive bullet corresponds to the through hole and simultaneously driving the perforator to rotate relative to the tubular column; The piezoelectric micro valve module is controlled to be opened to a second opening degree through the control system according to the requirement, the push-out piece pushes the perforating bullet out of the through hole, and then the perforating bullet is detonated, so that the generated second jet energy forms a second pore canal with a phase difference with the first pore canal at the same axial position; After the operation is finished, the piezoelectric micro valve module is powered off and kept closed, and the perforator is lifted out along with the pipe column to complete two times of perforation of the same phase and different energy of the pipe column.

Description

Single-section gun body in-situ rotary conversion bullet same-position abnormal perforating tool and operation method thereof Technical Field The invention relates to the technical field of oil-gas field exploration and development equipment, in particular to a single-section gun body in-situ rotary conversion bullet co-located abnormal perforating tool and an operation method thereof. Background The traditional perforator generally adopts a fixed drug loading and one-time ignition mode, and only a single passage can generate a single passage length and a single hole diameter, so that jet energy, perforation depth and perforation form cannot be adjusted in real time along with reservoir differences. In order to break through the limitation of one-switch-type single operation, the industry has tried multi-parameter perforation means such as double-gun serial connection, an adjustable liner and an electronic selection and development module, wherein the double-gun serial connection is triggered by different dosage gun bodies in a segmented mode, the gun bodies are required to be lengthened, the pumping pressure consumption of a horizontal well is increased by 1.5 MPa-2.0 MPa, well leakage is easy to induce, the adjustable liner changes the penetration depth by changing the cone angle of the liner body, but each change needs to be drilled, the well occupying time is prolonged by 18-24 hours, the dragging and wearing failure rate of a cable at a horizontal section in a long distance is higher than 8%, the electronic selection and development module can control the delay among clusters, but can not change single-hole energy, the penetration depth and the aperture are still fixed, and can not be dynamically optimized according to a real-time logging curve. More importantly, the tool does not have the on-line adjustment capability of a single-section gun body, an in-situ rotary conversion bullet and a valve, so that the secondary perforation cannot be realized with zero-falling objects, accurate phases and variable penetration depth, the urgent requirement of staged fracturing of shale oil and dense gas large-section horizontal wells on multi-cluster, multi-phase and multi-parameter holes of the same gun body, the same position and different phases is difficult to meet, and the efficient development of unconventional reservoirs is severely restricted. Disclosure of Invention The invention provides a perforating tool for single-section gun body in-situ rotation bullet-parity abnormal perforating and an operation method thereof, which aim to solve the defects in the prior art. The technical scheme of the invention is that the perforating gun comprises a shell, wherein an annular cavity is arranged in the shell, a plurality of pairs of through holes are oppositely arranged on two side walls of the annular cavity, and each pair of through holes are longitudinally distributed, and the perforating gun further comprises: the in-situ bullet changing module comprises two bullet feeding parts and a rotary driving piece, wherein the two bullet feeding parts are oppositely arranged in the shell, the rotary driving piece is connected with the two bullet feeding parts, a plurality of bullet storage bins corresponding to the through holes, perforating bullets arranged in the bullet storage bins and a pushing piece are arranged on each bullet feeding part, and the rotary driving piece is used for switching the correspondence between the two bullet feeding parts and the through holes; The piezoelectric micro valve modules are respectively arranged at opposite through holes in the annular cavity and used for controlling the opening degree of the valve so as to carry out differential adjustment of perforation energy; the control system is in signal connection with the rotary driving piece, the pushing pieces and the piezoelectric micro valve modules and is used for controlling the rotation of the rotary driving piece, the pushing of the pushing pieces and the valve opening adjustment of the piezoelectric micro valve modules. In at least one embodiment of the invention, each piezoelectric microvalve module comprises an annular amplitude transformer, an anode piezoelectric ceramic and a cathode piezoelectric ceramic, wherein the anode piezoelectric ceramic and the cathode piezoelectric ceramic are axially and sequentially arranged on the annular amplitude transformer respectively and are used for axially stretching and contracting under the action of voltage so as to realize the adjustment of the opening degree of the valve. In at least one embodiment of the invention, the rotary driving piece comprises a center shaft, a plurality of center connecting rods and a driving mechanism, wherein the center shaft is longitudinally and rotatably connected in the inner shell, the middle parts of the plurality of center connecting rods are hinged on the center shaft, two bullet feeding parts are arranged at two ends of the plurality of center co