CN-121993134-A - Fracturing construction parameter monitoring system and method

CN121993134ACN 121993134 ACN121993134 ACN 121993134ACN-121993134-A

Abstract

The specification relates to the technical field of fracturing construction and provides a fracturing construction parameter monitoring system and method. The system comprises a sand removing unit, a liquid injection unit, a liquid mixing unit, a control unit, a monitoring unit and a switching unit, wherein the sand removing unit is respectively connected with the sand mixing unit and the liquid mixing unit and used for obtaining separation liquid and injecting the separation liquid into the liquid mixing unit, the control unit is respectively connected with the liquid injection unit and the liquid mixing unit and used for controlling the liquid injection unit to inject base liquid into the liquid mixing unit to obtain mixed liquid, the monitoring unit is respectively connected with the liquid mixing unit and the sand mixing unit and used for monitoring the mixed liquid to obtain a monitoring result and injecting the mixed liquid into the sand mixing unit, and the switching unit is connected with the monitoring unit and used for switching sensing equipment in the monitoring unit in real time according to the interval range of the monitoring result so as to enable the measuring range of the sensing equipment to be matched with the actual parameters of the mixed liquid. Through the embodiment of the specification, the accurate and real-time monitoring of the fracturing construction parameters can be realized.

Inventors

XIONG FENG
YANG JIAN
LIU YANG
ZHAO ZHIHONG
ZHAO YUNHAI
ZHANG YING

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (14)

1. The fracturing construction parameter monitoring system is characterized by comprising a sand removal unit, a liquid injection unit, a liquid mixing unit, a control unit, a monitoring unit and a switching unit; the sand removal unit is respectively connected with the sand mixing unit and the liquid mixing unit and is used for carrying out sand-liquid separation on sand-carrying liquid output by the sand mixing unit so as to remove part of sand bodies in the sand-carrying liquid, obtain separation liquid and inject the separation liquid into the liquid mixing unit; The control unit is respectively connected with the liquid injection unit and the liquid mixing unit and is used for controlling the liquid injection unit to inject base liquid meeting the requirements of preset fracturing construction types and proportion into the liquid mixing unit so that the separation liquid and the base liquid are mixed in the liquid mixing unit according to the proportion requirements to obtain mixed liquid, wherein the proportion requirements are determined according to the proportion between the base liquid injected into a target well and sand-carrying liquid during fracturing construction; the monitoring unit is respectively connected with the mixed liquid unit and the sand mixing unit and is used for monitoring the mixed liquid to obtain a monitoring result and injecting the mixed liquid into the sand mixing unit; The switching unit is connected with the monitoring unit and is used for switching the sensing equipment in the monitoring unit in real time according to the interval range of the monitoring result so as to enable the measuring range of the sensing equipment to be matched with the actual parameters of the mixed liquid.
2. The system as recited in claim 1, further comprising: And the sand storage unit is connected with the sand removal unit and used for storing sand bodies of the sand-carrying fluid after sand-liquid separation.
3. The system of claim 1, wherein the control unit comprises: The first control pump is respectively connected with the liquid injection unit and the liquid mixing unit and is used for controlling the liquid injection unit to inject base liquid meeting the requirements of preset fracturing construction types and proportion into the liquid mixing unit.
4. A system according to claim 3, wherein the control unit further comprises: And the second control pump is respectively connected with the sand mixing unit and the sand removing unit and is used for controlling the flow rate of sand carrying fluid flowing from the sand mixing unit to the sand removing unit.
5. A system according to claim 3, wherein the control unit further comprises: The timer is used for counting the time spent by the liquid mixing unit for mixing the base liquid and the separation liquid; and the third control pump is respectively connected with the liquid mixing unit, the monitoring unit and the timer, and is operated when the time counted by the timer reaches the preset time so that the mixing degree of the mixed liquid flowing to the monitoring unit meets the preset requirement.
6. The system of claim 5, wherein the control unit further comprises: The electromagnetic valve is connected with the monitoring unit, is closed when the fluctuation degree of the monitoring result exceeds the preset fluctuation degree, and is opened when the monitoring result does not exceed the preset fluctuation degree.
7. The system of claim 5, wherein the monitoring unit further comprises: the liquid level meter is used for monitoring the real-time liquid height in the monitoring unit and sending the real-time liquid height to the control unit, so that when the real-time liquid height reaches a preset height, the control unit shuts down the third control pump.
8. The system of claim 5, wherein the control unit further comprises: And the fourth control pump is respectively connected with the monitoring unit and the sand mixing unit and is used for providing power for injecting the mixed liquid flowing out of the monitoring unit into the sand mixing unit.
9. The system of claim 1, wherein the monitoring unit comprises: The acid-base detector is used for monitoring the pH value of the mixed solution; The densimeter is used for monitoring the density of the mixed solution; And the viscometer is used for monitoring the viscosity of the mixed solution.
10. The system of claim 1, wherein the mixing unit comprises: the input end of the liquid inlet is connected with the sand removal unit and the liquid injection unit respectively, and the output end of the liquid inlet is connected with the liquid mixing container; A mixed liquid container for containing the mixed liquid; the impeller is connected with the mixed liquid container and positioned in the mixed liquid container and is used for stirring the mixed liquid; the stirring controller is connected with the impeller and used for controlling the rotation speed of the impeller; The exhaust valve is communicated with the inside of the liquid mixing container and the external environment; And the liquid outlet is connected with the monitoring unit.
11. A method for monitoring parameters of fracturing construction, the method comprising: acquiring a fracturing construction parameter monitoring request; acquiring sand-carrying fluid from a sand mixing unit according to the fracturing construction parameter monitoring request; carrying out sand-liquid separation on the sand-carrying liquid by utilizing a sand removal unit to obtain a separation liquid, and injecting the separation liquid into a liquid mixing unit; according to the preset fracturing construction requirements, determining base liquid meeting the preset fracturing construction type requirements and the proportion requirements; Injecting base liquid meeting the preset fracturing construction type requirement and proportion requirement into the liquid mixing unit by utilizing the control unit, so that the separation liquid and the base liquid are mixed in the liquid mixing unit according to the proportion requirement to obtain mixed liquid, wherein the proportion requirement is determined according to the proportion between the base liquid injected into a target well and sand-carrying liquid during fracturing construction; Monitoring the mixed liquor by using a monitoring unit to obtain a monitoring result, and injecting the mixed liquor into the sand mixing unit; when the monitoring unit monitors the mixed liquid, the switching unit is utilized to switch the sensing equipment in the monitoring unit in real time according to the interval range of the monitoring result, so that the measuring range of the sensing equipment is matched with the actual parameter of the mixed liquid.
12. A computer device comprising a memory, a processor, and a computer program stored on the memory, characterized in that the computer program, when being executed by the processor, executes instructions of the method according to claim 11.
13. A computer storage medium having stored thereon a computer program, which when run by a processor of a computer device, performs the instructions of the method according to claim 11.
14. A computer program product, characterized in that it comprises a computer program which, when being executed by a processor, executes instructions of the method according to claim 11.

Description

Fracturing construction parameter monitoring system and method Technical Field The specification relates to the technical field of fracturing construction, in particular to a fracturing construction parameter monitoring system and method. Background Hydraulic fracturing is used as a main mode of unconventional gas reservoir yield improvement, and aims of improving stratum circulation environment are achieved by pumping fracturing fluid into stratum. The fracturing fluid can directly influence the length of a fracturing construction joint, the laying uniformity of propping agent, the damage degree of a reservoir and the like, and finally, the recovery ratio of a gas reservoir is directly influenced. In order to ensure the optimal recovery ratio of the gas reservoir after transformation, the fracturing fluid needs to be detected, and the quality of the fracturing fluid is ensured. The existing shale gas fracturing fluid detection standard requires detection of pH value, viscosity, surface tension, bacterial content, dissolution time, compatibility, resistivity reduction, CST ratio, gel breaking viscosity, gel breaking time and residue content, and dense gas and other gas reservoirs require detection of pH value, apparent viscosity, crosslinking time, gel breaking performance, residue content, demulsification rate, resistivity reduction and compatibility. Meanwhile, parameters such as the discharge capacity, the sand concentration and the like of the fracturing construction have very important significance for the fracturing construction. The existing fracturing construction generally adopts a variable viscosity slick water system as fracturing fluid, has the characteristics of instant use and continuous change of performance along with time, so that the performance detection of the fracturing fluid is carried out manually, the conditions of data delay and discontinuous monitoring exist, and the real-time accurate detection requirement cannot be met by manual detection. From the viewpoint of reducing the labor intensity and risk of personnel at present, the prior detection mechanism needs to monitor the viscosity, the density and the pH value of the fracturing fluid once every a short time (for example, 15 minutes), the labor intensity of personnel is high, the error of monitoring data is large, and meanwhile, the sampling position is positioned in a high-pressure area, so that a great potential safety hazard exists. Therefore, a fracturing construction parameter monitoring system is needed to realize accurate and real-time monitoring of the fracturing construction parameters so as to guide fracturing construction and improve the fracturing construction effect. Disclosure of Invention In view of the fact that the performance detection of fracturing fluid is carried out manually at present, the conditions of lag in detection data and discontinuous monitoring exist, and the requirement of real-time accurate detection cannot be met by manual detection. From the viewpoint of reducing the labor intensity and risk of personnel at present, the detection mechanism needs to carry out monitoring on the viscosity, the density and the pH value of the fracturing fluid once every a short time (for example, 15 minutes), the labor intensity of personnel is high, the error of monitoring data is large, and meanwhile, the sampling position is positioned in a high-pressure area, so that a large potential safety hazard exists. In one aspect, some embodiments of the present disclosure are directed to a fracturing construction parameter monitoring system, the system including a sand removal unit, a fluid injection unit, a fluid mixing unit, a control unit, a monitoring unit, and a switching unit; the sand removal unit is respectively connected with the sand mixing unit and the liquid mixing unit and is used for carrying out sand-liquid separation on sand-carrying liquid output by the sand mixing unit so as to remove part of sand bodies in the sand-carrying liquid, obtain separation liquid and inject the separation liquid into the liquid mixing unit; The control unit is respectively connected with the liquid injection unit and the liquid mixing unit and is used for controlling the liquid injection unit to inject base liquid meeting the requirements of preset fracturing construction types and proportion into the liquid mixing unit so that the separation liquid and the base liquid are mixed in the liquid mixing unit according to the proportion requirements to obtain mixed liquid, wherein the proportion requirements are determined according to the proportion between the base liquid injected into a target well and sand-carrying liquid during fracturing construction; the monitoring unit is respectively connected with the mixed liquid unit and the sand mixing unit and is used for monitoring the mixed liquid to obtain a monitoring result and injecting the mixed liquid into the sand mixing unit; The switching unit is connected with the monit