CN-121993141-A - Drilling parameter regulation and control fusion analysis method, computer equipment and readable storage medium

CN121993141ACN 121993141 ACN121993141 ACN 121993141ACN-121993141-A

Abstract

The invention provides a drilling parameter regulation fusion analysis method, computer equipment and a readable storage medium. The method comprises the steps of obtaining drilling data, identifying drilling working conditions, calculating drilling performance indexes and extracting response points when the drilling working conditions are performed, calculating critical drilling operation parameters when the accumulation of the response points is insufficient, determining a safe operation window, exploring a drilling parameter regulation and control range, building a mechanical drilling speed prediction model after the accumulation of the response points is sufficient, solving optimal drilling parameters, determining recommended drilling parameters according to the optimal drilling parameters and actual drilling parameters, continuously updating the model for iteration, and finally keeping the optimal drilling parameters. The device comprises a processor and a memory storing instructions for executing the method. The storage medium has program instructions stored thereon. The invention ensures that the whole drilling process has self-learning, memory and decision making capability, has important significance for realizing digital drilling, and can be directly applied to the existing drilling equipment without additional underground measuring tools.

Inventors

QIAN HAODONG
HE BIN
ZHANG ZHIFA
LIU WEI
ZHANG GUO
YAN XIAOBING
SONG XIN
PENG TAOJUN
YANG XIAOFENG
ZENG LI

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: 20241104

Claims (17)

1. A drilling parameter regulation fusion analysis method, characterized in that the method comprises the following steps: acquiring drilling data; identifying drilling conditions according to the drilling data; under the condition that the drilling working condition is identified, calculating a drilling performance index according to drilling data, and extracting a response point; Judging whether the response points are accumulated to a sufficient quantity, and under the condition that the response points are not accumulated to a sufficient quantity, calculating critical drilling operation parameters according to drilling data, and determining a drilling parameter safety operation window; After a sufficient number of response points are accumulated, a mechanical drilling speed prediction model is established, and the optimal drilling parameters are solved under the constraint of critical drilling operation parameters; And (3) continuously updating and iterating the mechanical drilling rate model, enabling the actual drilling parameters to approach the optimal drilling parameters, and finally keeping the optimal drilling parameters to drill.
2. The drilling parameter tuning fusion analysis method of claim 1, further comprising preprocessing the drilling data comprising removing data nulls, outliers, and data noise, averaging, wherein, Averaging weight on bit and rotational speed includes the following related formulas: WOB(t i ;t i-P )＝AverageWOB(t i ;t i-P );RPM(t i ;t i-P )＝AverageRPM(t i ;t i-P ); Wherein WOB (ti; ti- P ) is the average weight on bit over time t i-P ～t i , kN; RPM (ti; ti- P ) is the average rotational speed over time t i-P ～t i , r/min.
3. The drilling parameter tuning fusion analysis method of claim 1, wherein the drilling data comprises dynamic data and quasi-dynamic data, wherein, The dynamic data comprises at least one of hook load, weight on bit, torque, rotation speed, inlet flow, drilling time, drill bit well depth, vertical pipe pressure, well depth and hook height; The quasi-dynamic data includes at least one of real drilling tool assembly data, real drilling body structure data, real drilling well trajectory data, real drilling fluid density data, and real drilling fluid rheological data.
4. The drilling parameter tuning fusion analysis method of claim 1, wherein the drilling conditions comprise at least one of: a tripping working condition, a positive/reverse reaming working condition, a single joint, a rotary drilling, a sliding drilling, an idling working condition and a clamping working condition; The drilling conditions include rotary drilling or sliding drilling.
5. The drilling parameter tuning fusion analysis method of claim 1, wherein the drilling performance index comprises at least one of: mechanical drilling speed, mechanical specific energy, drill bit cutting depth, stratum drillability extreme value and stick-slip index.
6. The drilling parameter tuning fusion analysis method of claim 5, wherein, The rate of penetration was calculated using the following: Wherein ROP (ti; ti- P ) is the average mechanical drilling speed in t i-P ～t i time, m/h, delta Bitdepth (ti; ti- P ) is the bit depth change value in t i-P ～t i time, m; delta t (ti; ti- P ) is t i-P ～t i time, h; the mechanical specific energy was calculated using the formula: Wherein MSE (ti; ti- P ) is the average mechanical specific energy in T i-P ～t i time, r/min, A is the rock breaking area of the drill bit, mm 2 ;Δs i is the footage in T i-P ～t i time, m is the average torque in T i-P ～t i time, m is the average drill bit cutting depth in T i-P ～t i time, mm is DOC, and WOB (T i ;t i-P ) is the average weight on bit in T i-P ～t i time, kN; the bit depth of cut was calculated using the following: Wherein DOC (ti; ti- P ) is the average bit cutting depth in t i-P ～t i time, mm; Calculating the formation drillability extremum using the formula: Wherein d is the diameter of the drill bit, and mm; The stick-slip index was calculated using the formula: Wherein RPM max and RPM min are respectively the maximum rotation speed and the minimum rotation speed of the drill bit in the slipping stage, and RPM (ti; ti- P ) is the average rotation speed in t i-P ～t i time, r/min.
7. The drilling parameter tuning fusion analysis method of claim 1, wherein the critical drilling operation parameters include a critical rate of penetration, a critical weight on bit, a critical rotational speed, a critical displacement, and a critical stick-slip index.
8. The drilling parameter tuning fusion analysis method of claim 7, wherein, Calculating the critical rate of penetration according to: Wherein, the Wherein ROP max is the maximum rate of penetration, m/h, v a is the annulus return rate, m/s, v s is the cuttings settling rate, m/s, d s is the cuttings diameter, mm, d h is the borehole diameter, mm, d p is the drill string outer diameter, mm, Q is the drilling fluid displacement, L/s, ρ s is the cuttings density, kg/m 3 ;ρ d is the drilling fluid density, kg/m 3 ;μ e is the drilling fluid effective viscosity, mPa.s. Calculating the critical weight-on-bit according to the formula: Wherein F is axial pressure, N, EI is bending rigidity of the pipe column, N.m 2 , q is gravity of the pipe column in unit length, N/m, r c is radial clearance between the pipe column and the well wall, and m; the critical displacement is determined according to the circulating pressure consumption and the rated pump pressure; The critical rotation speed is determined by the relation between the rated torque and the rotation speed of the top drive; the critical stick-slip index is 1.
9. The drilling parameter regulation and control fusion analysis method according to claim 1, further comprising monitoring the change trend of the drilling performance index in real time, judging whether a drilling inefficiency condition exists, and regulating and controlling under the condition that the drilling inefficiency condition exists; the drilling low-efficiency working conditions comprise serious abrasion of a drill bit, stratum change, bit balling and bottom balling.
10. The drilling parameter tuning fusion analysis method of claim 9, wherein, in the event of the occurrence of the drilling inefficiency, the tuning comprises: If the serious abrasion of the drill bit is monitored, the drill bit is started to be replaced; If the stratum change is monitored, reconstructing a response point set and a mechanical drilling speed prediction model, wherein the response point set comprises drilling parameters and the mechanical drilling speed, and the drilling parameters comprise drilling weight and rotating speed; if downhole balling or bit balling is monitored, the well is washed with large displacement.
11. The method of claim 1, wherein the drilling parameter safety operation window is expressed as WOB ε (WOB a ,WOB b ),RPM∈(RPM a ,RPM b ), and the 5 drilling parameter combinations are:
12. the drilling parameter tuning fusion analysis method of claim 11, wherein the recommended drilling parameters are: wherein (WOB, RPM) is the combination of the optimal drilling parameters and (WOB 0 ,RPM 0 ) is the actual operating drilling parameter.
13. The drilling parameter regulation and control fusion analysis method of claim 1, wherein the mechanical drilling speed prediction model comprises a function relation between drilling weight and rotating speed and mechanical drilling speed, wherein the drilling weight and the rotating speed are used as input characteristic variables, the mechanical drilling speed is used as an output variable, and the mechanical drilling speed prediction model is obtained through training.
14. The drilling parameter tuning fusion analysis method of claim 1, wherein the step of continuously updating the rate of penetration prediction model comprises: and continuously acquiring and updating response points in the real-time drilling process, so that the mechanical drilling speed model is continuously updated and iterated.
15. The drilling parameter tuning fusion analysis method of claim 14, wherein the set of response points and the rate of penetration prediction model are reconstructed in the event that a formation change is monitored.
16. 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 method of any of claims 1-15.
17. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-15.

Description

Drilling parameter regulation and control fusion analysis method, computer equipment and readable storage medium Technical Field The invention relates to the technical field of petroleum exploration and development, in particular to a drilling parameter regulation and control fusion analysis method, computer equipment and a readable storage medium. Background Intelligent drilling is a highly integrated revolutionary technology of artificial intelligence and drilling engineering, and is an intelligent drilling technology which is autonomously perceived, decided and controlled by a machine. The drilling parameter regulation fusion analysis method is an important technical support for intelligent drilling. The intelligent drilling is to replace the traditional driller regulation and control parameter mode drilling by using a drilling machine autonomous drilling mode, and the intelligent drilling is faced with new challenges, and is characterized in that the intelligent drilling is in multi-dimension (drilling efficiency monitoring, drilling parameter real-time decision making, drilling parameter closed-loop regulation and control), dynamic evolution (stratum change, drill bit abrasion) and the like, and the intelligent drilling is required to carry out fusion analysis on drilling dynamic data, a drilling physical model and an artificial intelligent algorithm, so that a theoretical basis is provided for the drilling parameter real-time regulation and control, and the autonomous drilling of the drilling machine under complex drilling conditions is realized. Therefore, the invention provides a drilling parameter regulation and control fusion analysis method, which effectively fuses drilling dynamic data, a drilling physical model and an artificial intelligent algorithm, so that the whole drilling process has self-learning, memory and decision-making capability, and has important significance for realizing intelligent drilling. Disclosure of Invention The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. In order to achieve the above purpose, the invention provides a drilling parameter regulation fusion analysis method. The method comprises the steps of obtaining drilling data, identifying drilling conditions according to the drilling data, calculating drilling performance indexes according to the drilling data and extracting response points under the condition that the drilling conditions are identified, judging whether the response points are accumulated to a sufficient number, calculating critical drilling operation parameters according to the drilling data under the condition that the response points are not accumulated, determining a drilling parameter safety operation window, adopting different drilling parameters in the drilling parameter safety operation window to drill, exploring a drilling parameter regulation and control range to increase the response points, building a mechanical drilling speed prediction model after the sufficient number of the response points are accumulated, solving optimal drilling parameters under the constraint of the critical drilling operation parameters, determining recommended drilling parameters according to the optimal drilling parameters and the actually operated drilling parameters, continuously updating and iterating the mechanical drilling speed model, enabling the actually drilled parameters to approach the optimal drilling parameters, and finally keeping the optimal drilling parameters. In another aspect, the invention provides a computer device. The computer device comprises 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 a method according to the above. In yet another aspect, the invention provides a computer-readable storage medium. The computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the method as described above. Compared with the prior art, the invention has the beneficial effects that: (1) The invention can be directly applied on the basis of the conventional drilling equipment without additional underground measuring tools, can be used for regulating and controlling drilling parameters of a vertical well, a highly-inclined well and a horizontal well, has wide application range, can be directly used for regulating and controlling drilling parameters of a drilling site, and does not need adjacent well data. (2) The invention effectively fuses the drilling dynamic data, the physical model and the intelligent algorithm, so that the whole drilling process has self-learning, memory and decision-making capability, has great significance for realizing digital drilling, and can be directly applied on the basis of the conventional drilling equipment without additional und