CN-122020776-A - Ground brine well solution channel communication construction method based on multisource data fusion model construction

CN122020776ACN 122020776 ACN122020776 ACN 122020776ACN-122020776-A

Abstract

The invention discloses a construction method for communicating ground brine wells solution channel constructed based on a multisource data fusion model, and relates to the technical field of salt well exploitation. The invention adopts a three-dimensional geophysical prospecting technology and a sonar technology to measure the form and position of the vertical well section, determine the size of the cavity of the vertical well section, the size and the approximate direction of the bottom channel, then confirm the butt joint position according to the comparison of the inclinometry result and the original data, mutually correct parameters, reduce measurement errors and other methods, write a design scheme according to construction requirements, import the obtained data into modeling software for simulation, establish a complete data model through a digital simulation technology, continuously adjust the construction scheme through prediction and analysis of the existing data, guide field production, ensure one-time penetration and improve the medium targeting rate. According to the invention, from macroscopic path planning to microscopic target positioning and then to real-time deviation correction in the drilling process, closed-loop control is formed, and the problem of accurate butt joint of horizontal wells in complex salt layers is solved.

Inventors

SUN MINGLI
ZHANG KUNPING
Wang Jueshan
ZHANG ANHUA
BAI YUBO
CHEN KA
Xi Erxuan
MA XUELIN
ZHANG JUN
PANG JIANGTAO
ZHANG YAWEI
FANG PING
ZHOU ZHENG

Assignees

中勘资源勘探科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251226

Claims (10)

1. The construction method for communicating the ground brine wells solution channel constructed based on the multi-source data fusion model is implemented based on seismic technology, sonar technology and borehole inclinometry data and is characterized by comprising the following steps: Respectively carrying out three-dimensional seismic survey, sonar cavity measurement and gyroscopic inclinometry measurement on two halogen well drilling holes of the first drilling hole and the second drilling hole, and acquiring stratum structure data, solution cavity form data and drilling track data; Carrying out fusion processing on stratum structure data, solution cavity form data and drilling track data, constructing a three-dimensional underground digital model according to the fused data, and designing an initial construction track of a third drilling hole based on the three-dimensional underground digital model, wherein the third drilling hole is positioned in the middle of a first drilling hole and a second drilling hole bottom channel; constructing the three drilling holes by adopting a directional while-drilling technology, collecting three track data of the drilling holes in real time, feeding back the three track data to a three-dimensional digital model, and dynamically correcting the construction track; When three drilling constructions are conducted to a preset range from the designed butt joint position, the ground penetrating radar is adopted to accurately detect the target solution cavity, the three-dimensional digital model is updated, final track adjustment is completed, and accurate communication of three drilling horizontal sections solution channel of the brine well is achieved.
2. The construction method for communicating the ground brine wells solution channel constructed based on the multi-source data fusion model according to claim 1, wherein three-dimensional seismic survey, sonar cavity survey and gyroscopic inclinometry are respectively carried out on two brine wells of the first and second completed drilling holes, and the construction method is specifically as follows: Before the construction of the third drilling hole, re-measuring well inclination azimuth data of the first drilling hole and the second drilling hole by adopting a gyroscopic logging technology, acquiring solution cavity morphology and development azimuth data of the two drilling holes by adopting a sonar cavity measuring technology, and acquiring stratum structure and solution cavity space distribution data by adopting a three-dimensional seismic technology; and comparing and correcting the measured data with the design file, reconstructing a precise underground three-dimensional digital model, and designing the initial construction track of the drilling three based on the corrected data.
3. The construction method for communicating the ground brine well solution channel constructed based on the multi-source data fusion model according to claim 2, wherein the fusion processing of stratum structure data, solution cavity form data and drilling track data is to register and superimpose stratum and construction interfaces interpreted by three-dimensional seismic data, a solution cavity three-dimensional point cloud model acquired by sonar measuring cavities and high-precision drilling tracks acquired by gyroscopic inclinations in the same three-dimensional space coordinate system.
4. The construction method for communicating the ground brine well solution channel constructed based on the multi-source data fusion model according to claim 2, wherein the third borehole is located at the middle position of the first borehole and the second borehole, specifically, the wellhead surface position of the third borehole is located in the perpendicular bisector region of the connection between the first borehole and the second borehole on the horizontal projection plane, and the designed horizontal segment track is located in the shortest distance region of the communication paths of the two borehole bottoms solution channel, so as to achieve optimal butting efficiency.
5. The construction method for communicating the ground brine well solution channel constructed based on the multi-source data fusion model according to claim 4, wherein the construction of the underground three-dimensional digital model is realized by adopting professional digital modeling software, and the software is provided with a multi-source heterogeneous data fusion interface, and can synchronously integrate and process three-dimensional seismic data, sonar point cloud data, gyro inclinometry data and ground penetrating radar reflection data and generate a visual construction navigation interface.
6. The construction method for constructing the communication of the ground brine well solution channel based on the multi-source data fusion model according to claim 5 is characterized in that an initial construction track of a drilling three is designed based on a downhole three-dimensional digital model, and specifically comprises the following steps: in the model, track design is carried out on the principle that a target track line of a third drilling hole is positioned on the central extension line of a first drilling hole and a second drilling hole bottom solution cavity channel.
7. The method for constructing the communication construction of the ground brine well solution channel based on the multi-source data fusion model as set forth in claim 6, wherein the method is characterized in that three track data of the drilling holes are collected in real time and fed back to the three-dimensional digital model, the construction track is dynamically corrected, namely real drilling deviation and azimuth data of the three drilling holes are synchronously fed back to the three-dimensional digital model in real time by the measurement while drilling system, the real drilling track and the design track are compared in real time by the model and visually displayed, and when the deviation of the real drilling track and the design track exceeds a preset threshold value, deviation is corrected by adjusting drilling tool combination or drilling parameters, so that the real drilling track is returned to the design track.
8. The construction method for communicating the ground brine well solution channel constructed based on the multi-source data fusion model of claim 7 is characterized in that the preset range is a range that three drilling holes are drilled to be 100 meters away from a designed docking position, at the moment, 360-degree all-round accurate detection is carried out on a target solution cavity by adopting a ground penetrating radar, actual boundary, extending direction and space volume data of the solution cavity are obtained, the underground three-dimensional digital model is finally updated according to the actual boundary, extending direction and space volume data, and the terminal track of the three drilling holes is adjusted to be less than 5 meters away from the center line of the solution cavity.
9. The construction method for communicating the ground brine wells solution channel constructed based on the multi-source data fusion model according to claim 8, wherein the accurate communication of the three brine well drilling horizontal sections solution channel is that a successful target point of a third drilling hole penetrates through a target solution cavity at the bottom of a first drilling hole and a second drilling hole at the same time, so that a channel for fluid communication is formed.
10. The construction method for communicating the ground brine wells solution channel constructed based on the multi-source data fusion model according to claim 3, wherein the sonar ranging cavity is implemented by using rotary scanning sonar to obtain three-dimensional point cloud form data of the first and second borehole solution cavities.

Description

Ground brine well solution channel communication construction method based on multisource data fusion model construction Technical Field The invention relates to the technical field of salt well exploitation, in particular to a construction method for communicating a ground brine well solution channel constructed based on a multi-source data fusion model. Background Salt is an essential resource essential for human survival and chemical production, and the exploitation efficiency and the technical level are directly related to the resource utilization rate and the production cost. The exploitation of well mineral salt is successively subjected to the traditional stages of single well water-soluble exploitation, fracturing method, natural dissolution method and the like. Although the methods are based, the obvious defects of low yield, high cost, more accidents in the well, low resource recovery rate, unstable brine concentration, high environmental pollution risk and the like generally exist, and the requirements of the modern industry on efficient green development of resources are difficult to meet. With the progress of drilling technology, the development of horizontal well drilling technology, particularly butt well technology, brings revolutionary changes to salt mine exploitation. The butt joint well technology aims at realizing accurate communication between a new horizontal well and an existing production shaft or solution cavity underground by drilling, forming a better fluid channel, and thus, the recovery ratio is hopefully greatly improved. However, in practical engineering application, especially in the construction process aiming at communicating the existing horizontal section solution cavity, the butt joint well technology faces serious challenges, and the conventional measurement and control method has the following problems that firstly, underground accurate butt joint is difficult to realize, the phenomenon of 'off-target' of a drilling track is frequent, secondly, secondary or even multiple sidetrack or re-drilling operation is required after the primary butt joint fails, a great deal of manpower, material resources and financial resources are wasted, the construction period is greatly prolonged, and finally, even if the butt joint is successful, long groove building time is required to enlarge a solution cavity channel, so that the concentration and flow of brine required by exploitation can be achieved, and the production efficiency is influenced. Therefore, the invention provides a construction method for communicating the ground brine wells solution channel constructed based on a multi-source data fusion model. Disclosure of Invention The invention aims to provide a construction method for communicating a ground brine well solution channel constructed based on a multi-source data fusion model, so as to solve the problems in the background art. In order to achieve the purpose, the invention provides the following technical scheme that the construction method for communicating the ground brine wells solution channel constructed based on the multi-source data fusion model is implemented based on seismic technology, sonar technology and drilling inclinometry data and comprises the following steps: Respectively carrying out three-dimensional seismic survey, sonar cavity measurement and gyroscopic inclinometry measurement on two halogen well drilling holes of the first drilling hole and the second drilling hole, and acquiring stratum structure data, solution cavity form data and drilling track data; Carrying out fusion processing on stratum structure data, solution cavity form data and drilling track data, constructing a three-dimensional underground digital model according to the fused data, and designing an initial construction track of a third drilling hole based on the three-dimensional underground digital model, wherein the third drilling hole is positioned in the middle of a first drilling hole and a second drilling hole bottom channel; constructing the three drilling holes by adopting a directional while-drilling technology, collecting three track data of the drilling holes in real time, feeding back the three track data to a three-dimensional digital model, and dynamically correcting the construction track; When three drilling constructions are conducted to a preset range from the designed butt joint position, the ground penetrating radar is adopted to accurately detect the target solution cavity, the three-dimensional digital model is updated, final track adjustment is completed, and accurate communication of three drilling horizontal sections solution channel of the brine well is achieved. Further, three-dimensional seismic survey, sonar cavity survey and gyroscopic inclinometry are respectively carried out on two halogen well drilling holes of the completed drilling one and drilling two, and the three-dimensional seismic survey, the sonar cavity survey and gyroscopic inclinometr