CN-116556843-B - Hydraulic self-locking type reamer drilling method, device, equipment and medium

CN116556843BCN 116556843 BCN116556843 BCN 116556843BCN-116556843-B

Abstract

The invention provides a drilling method, a device, equipment and a medium of a hydraulic self-locking type reamer while drilling, which comprises the following steps of combining a drilling tool, combining the hydraulic self-locking type reamer while drilling, a drill bit and a drill collar component into a drilling tool combination, wherein the hydraulic self-locking type reamer while drilling comprises a telescopic blade, and hydraulically controlling the telescopic blade; the drill bit provides drilling fluid pressure drop for the hydraulic self-locking reamer while drilling, the drill collar assembly provides drilling pressure for the hydraulic self-locking reamer while drilling and the drill bit, and the drilling tool assembly is used for drilling. The hydraulic pressure differential pressure type reamer while drilling can be comprehensively utilized, the operation is simple, the adaptability is high, the drill sticking accident caused by the self-locking reamer while drilling is avoided, the reaming efficiency and the reaming quality of the self-locking reamer while drilling can be effectively improved, and the application range of the reaming technology is greatly widened.

Inventors

LIU BIN
HE CHAO
XU TINGTING
WAN SIYI
CHEN WENCAI
YAO JIANLIN
LV ZHIJUN
YAO KUNPENG
ZHANG WEI
YU CHENG
ZHOU GANG
ZHENG KAIZHONG

Assignees

中国石油天然气集团有限公司
中国石油集团川庆钻探工程有限公司

Dates

Publication Date: 20260508
Application Date: 20230425

Claims (10)

1. A method of drilling a hydraulic self-locking reamer, the method comprising the steps of: a combined drilling tool, which combines a hydraulic self-locking reamer, a drill bit and a drill collar component into a drilling tool combination, The hydraulic self-locking type reamer comprises a telescopic blade, a drill bit, a drill collar component, a drilling tool combination and a drilling tool combination, wherein the hydraulic self-locking type reamer comprises a telescopic blade which is controlled by hydraulic pressure; the drilling method further comprises the steps of testing a first starting displacement and a first pump pressure, a second working displacement and a second pump pressure, and a third locking displacement and a third pump pressure of the hydraulic self-locking type reamer while drilling before starting to drill; The drilling method further comprises the steps of confirming a fourth underground working displacement according to the second pumping pressure before starting to drill, confirming a fifth underground locking displacement and a fourth pumping pressure according to the third pumping pressure, confirming whether a telescopic blade is locked according to the fourth pumping pressure and the first pumping pressure, increasing drilling fluid displacement until the telescopic blade is locked when the telescopic blade is unlocked, updating the fifth underground locking displacement and the fourth pumping pressure, increasing the drilling fluid displacement to the fifth underground locking displacement when the telescopic blade is locked, triggering the telescopic blade to unlock, stopping pumping after a period of operation, and automatically recycling the telescopic blade into the body; The drilling method further comprises the steps that when the fourth pumping pressure is smaller than the first pumping pressure by 0.2-0.4MPa and the telescopic blades are locked successfully, when the fourth pumping pressure is equal to or similar to the first pumping pressure, the telescopic blades are not locked successfully, and the drilling fluid displacement is increased by 1-3L/s each time.
2. The hydraulic self-locking reamer drilling method of claim 1, further comprising: Increasing the drilling fluid displacement to be not more than the first starting displacement for displacement circulation; Increasing the drilling fluid displacement to the first starting displacement, and recording a fifth pump pressure under the current displacement; increasing the drilling fluid displacement to the fourth underground working displacement, returning the torque of the rotary table or the top drive to zero, and fully opening the telescopic blades; increasing the drilling fluid displacement to the fifth underground locking displacement, and locking the telescopic blades; reducing the drilling fluid displacement to the first starting displacement, and recording a pumping pressure sixth pumping pressure at the moment; when the telescopic blade is unlocked, reducing the drilling fluid displacement to the first starting displacement after increasing the drilling fluid displacement, and updating the sixth pump pressure until the telescopic blade is locked; And increasing the drilling fluid to the fourth underground working displacement, and performing reaming drilling.
3. The hydraulic self-locking reamer drilling method of claim 2, further comprising: reducing the drilling fluid displacement to the first starting displacement, and recording the pumping pressure at the moment as a seventh pumping pressure; increasing the drilling fluid displacement to the fifth underground locking displacement, returning the torque of the turntable or the top drive to zero, and rotating the drilling tool; and according to the seventh pumping pressure and the eighth pumping pressure, confirming whether the telescopic blade is unlocked or not.
4. The hydraulic self-locking reamer drilling method of claim 1, further comprising: Lifting the drilling tool assembly, shearing a sliding mandrel in the hydraulic self-locking type reamer while drilling by using friction force of a well wall and the telescopic blades, and enabling the telescopic blades to enter the hydraulic self-locking type reamer while drilling so as to realize forced recovery of the telescopic blades.
5. The hydraulic self-locking reamer drilling method of claim 1, further comprising: when the drilling is started or stopped, circulating drilling fluid, wherein the displacement of the drilling fluid is not more than the first starting displacement, and the reaming speed is 40-50 rpm.
6. The hydraulic self-locking reamer drilling method of claim 2, further comprising: when the sixth pumping pressure is smaller than the fifth pumping pressure by 0.2-0.4MPa, the telescopic blade is successfully locked; When the sixth pump pressure and the fifth pump pressure are equal or similar, the telescopic blades are not locked successfully, and the drilling fluid discharge capacity is increased by 1-3L/s each time.
7. The hydraulic self-locking reamer drilling method of claim 3, further comprising: When the seventh pumping pressure is smaller than the eighth pumping pressure by 0.2-0.4MPa, the telescopic blade is successfully locked; When the seventh pump pressure and the eighth pump pressure are equal or similar, the telescopic blades are not locked successfully, and the drilling fluid discharge capacity is increased by 1-3L/s each time.
8. A hydraulic self-locking type reamer drilling device is characterized by being used for realizing the hydraulic self-locking type reamer drilling method according to any one of claims 1-7, and comprising a combined drilling tool module, a drilling platform test module, a wellhead test module, a drilling module, a reamer drilling module, a recovery telescopic blade module and a drill lifting module, The combined drilling tool module is used for constructing and controlling a drilling tool combination; The drill floor testing module is connected with the combined drilling tool module and is used for testing the first starting displacement, the second working displacement, the third locking displacement and the third pump pressure of the hydraulic self-locking type while-drilling reamer; the wellhead testing module is connected with the drill floor testing module and is used for testing the fourth underground working displacement, the fifth locking displacement and the fourth pumping pressure and judging whether the telescopic blade is locked or not according to the third pumping pressure and the fourth pumping pressure; The drilling module is connected with the combined drilling tool module and used for controlling the drilling fluid discharge capacity and the reaming rotating speed in the drilling process; The reaming while drilling module is connected with the drill floor test module and the wellhead test module and is used for opening the telescopic blade, locking the telescopic blade, detecting the locking state of the telescopic blade and controlling reaming drilling according to the first starting displacement and the fifth downhole locking displacement; the recovery telescopic blade module is connected with the drill floor test module and the wellhead test module and is used for unlocking the telescopic blade and testing whether the blade is recovered or not; the drill drawing module is connected with the combined drilling tool module and used for controlling the drilling fluid discharge capacity and the reaming rotating speed in the drill drawing process.
9. A computer device, comprising: at least one processor; a memory storing program instructions, wherein the program instructions are configured to be executed by the at least one processor, the program instructions comprising instructions for performing the hydraulic self-locking reamer drilling method of any one of claims 1-7.
10. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the hydraulic self-locking reamer drilling method of any one of claims 1 to 7.

Description

Hydraulic self-locking type reamer drilling method, device, equipment and medium Technical Field The invention relates to the field of petroleum and natural gas drilling, in particular to a hydraulic self-locking type reamer drilling method, a hydraulic self-locking type reamer drilling device, equipment for realizing the hydraulic self-locking type reamer drilling method and a computer readable storage medium. Background As oil and gas drilling is shifted to the fields of deep wells, ultra-deep wells, drilling of high-pressure oil and gas wells and the like, the more the problems are frequently encountered, the problem that the drilling process is difficult to continue due to the fact that the diameter of a borehole is reduced is solved, so that the use of the technique and the tool for reaming while drilling of the petroleum drilling is generated, the problem of reducing the diameter of the borehole can be solved, the diameter of the borehole is enlarged, the downhole testing and casing running operation are facilitated, the casing level can be reduced, the use amount of casing steel and well cementation cement is reduced, and the operation cost is reduced. However, at present, the control of the reaming tool while drilling is mainly started in a ball throwing mode, the recovery of the blade generally needs to stop the pump and then retract by a spring, and most of the reaming tools are used for single-stroke reaming, and the control mode is low in efficiency. A paper entitled development and typical application of hydraulic reamer while drilling as disclosed in 2019, 05 and 10 describes a hydraulic reamer while drilling that controls extension and retraction of blades by throwing balls, and applications thereof. The ball throwing is divided into a small-diameter starting ball and a large-diameter unclamping ball. When the reamer works, the starting ball is firstly thrown into the reamer, the starting ball falls into the starting mechanism to form a pressure-holding shearing lower shearing pin, the main fluid channel and the bypass fluid channel are opened, the main fluid continues to flow downwards to the pilot bit, the bypass fluid drives the blades to extend out and clean the cooling blades, and the hydraulic pressure difference still cannot be used for controlling the reamer while drilling in all aspects. However, how to control the hydraulic pressure difference with high efficiency and comprehensively is the development direction of the reaming while drilling tool in the control aspect, and can greatly widen the application range of the reaming technology. Disclosure of Invention The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, one of the purposes of the invention is to provide a hydraulic self-locking type reamer drilling method, which can solve the technical problems that the annular clearance of the casing of a small-clearance well, an ultra-deep well and a salt-paste layer well is small, the creep resistance and the sealing ability of a cement sheath well cementation system are poor, enlarge the diameter of a well hole, facilitate the underground test and the casing running operation, reduce the level of the casing, further reduce the use amount of casing steel and cement, reduce the operation cost and provide theoretical support for the field operation of the self-locking type petroleum drilling reamer drilling device. In order to achieve the aim, the invention provides a drilling method of a hydraulic self-locking type reamer while drilling, which comprises the following steps of combining a drilling tool, combining the hydraulic self-locking type reamer while drilling, a drill bit and a drill collar component into a drilling tool combination, wherein the hydraulic self-locking type reamer while drilling comprises telescopic blades, hydraulic control telescopic blades are applied, the drill bit provides drilling fluid pressure drop for the hydraulic self-locking type reamer while drilling, the drill collar component provides drilling pressure for the hydraulic self-locking type reamer while drilling and the drill bit, and drilling is carried out by using the drilling tool combination. In one exemplary embodiment of the hydraulic self-locking while-drilling reamer drilling method of the present invention, the hydraulic self-locking while-drilling reamer may be tested for a first start-up displacement and a first pump pressure, a second work displacement and a second pump pressure, and a third lock-up displacement and a third pump pressure prior to beginning to drill down. In an exemplary embodiment of the hydraulic self-locking reamer drilling method, a fourth downhole working displacement can be confirmed according to the second pumping pressure before starting to drill, a fifth downhole locking displacement and a fourth pumping pressure can be confirmed according to the third pumping pressure, whether a telescopic blade is lo