CN107605463A - A kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction - Google Patents

A kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction Download PDF

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Publication number
CN107605463A
CN107605463A CN201711103399.6A CN201711103399A CN107605463A CN 107605463 A CN107605463 A CN 107605463A CN 201711103399 A CN201711103399 A CN 201711103399A CN 107605463 A CN107605463 A CN 107605463A
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China
Prior art keywords
pit shaft
pressure
leak stopping
test instrument
blocking construction
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CN201711103399.6A
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Chinese (zh)
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CN107605463B (en
Inventor
马光长
冯学荣
肖沣峰
何劲
漆梅
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China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
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CNPC Chuanqing Drilling Engineering Co Ltd
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Abstract

The invention discloses a kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction, it is related to oil and gas well drilling blocking construction technical field of operation.The present invention estimates the hydrostatic level position in pit shaft after the completion of blocking construction operation according to drop ply pressure and the blocking construction scheme chosen;Pressure test instrument is put into pit shaft so that below hydrostatic level of the pressure test instrument in the wellbore in estimation;Start pressure test instrument, monitor pit shaft dynamic Liquid Surface in real time;According to the pit shaft dynamic Liquid Surface situation of monitoring, the position of leak stopping slurries in the wellbore is calculated, and calculates the leak stopping slurries quantity into drop ply.The present invention can grasp the quantity that leak stopping slurries enter drop ply in real time, blocking construction operation is met blocking construction design requirement, improve leak stopping success rate to greatest extent, especially improve the success rate of the hydraulic material leak stopping such as cement mortar.

Description

A kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction
Technical field
The present invention relates to oil and gas well drilling technical field, more particularly, to oil and gas well drilling blocking construction operation Technical field, more specifically to a kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction.
Background technology
During exploration and development oil and gas resource, in order to advantageously promote drilling well and well workover construction task Implement, and in the two work progress, usually occur that working fluid in well leaks into the phenomenon on stratum, here it is so-called well Leakage, in general, in oil/gas drilling operation process, can usually occur circulation problems.If there is circulation problems, can not only damage Substantial amounts of drilling fluid is lost, also resulting in wellbore construction can not be normally carried out, so as to cause substantial amounts of economy and the loss of time.Institute With, once circulation problems occur it is necessary to which effective measure is taken it in time, so as to leak stopping in the very first time, this The problem of sample effectively could prevent lot of materials from wasting.
In blocking construction operation, the well of drilling fluid can not be returned out for well head, due to currently without effective dynamic fluid flow Face monitoring instrument and method, the position in hydrodynamic face in pit shaft can only be estimated by replacing the amount of drilling fluid, and thus calculated stifled Spillage liquid position in the wellbore simultaneously judges amount that leak stopping slurries are entered in drop ply on this basis.It is this to pass through replacement amount To calculate that the method for the position of leak stopping slurries in the wellbore is often inaccurate, it is difficult to which true reflection leak stopping slurries are in the wellbore Situation, thus frequently result in the failure using the hydraulic material leak stopping such as cement mortar, the success rate of leak stopping is not high.
The content of the invention
In order to overcome defect present in above-mentioned prior art and deficiency, applied the invention provides one kind for drilling leakage blockage The pit shaft hydrodynamic face monitoring method of work, goal of the invention of the invention are intended to monitor pit shaft dynamic fluid flow in blocking construction operation process Face situation, to grasp the quantity that leak stopping slurries enter drop ply in real time, blocking construction operation is set to meet blocking construction design requirement, Leak stopping success rate is improved to greatest extent, especially improves the success rate of the hydraulic material leak stopping such as cement mortar.
A kind of pit shaft liquid level monitoring method for drilling leakage blockage construction, it is characterised in that:Comprise the following steps:
Step A:According to drop ply pressure and the blocking construction scheme chosen, the hydrostatic of pit shaft after the completion of blocking construction operation is estimated Face position;
Step B:Pressure test instrument is connected with leak stopping BHA, and the pressure test instrument after connecting is put into pit shaft In so that the position of pressure test instrument in the wellbore, below the hydrostatic level estimated in step A;
Step C:Blocking construction operation is proceeded by, starts pressure test instrument, monitors pit shaft dynamic Liquid Surface in real time;
Step D:According to the pit shaft dynamic Liquid Surface situation monitored in step C, the position of leak stopping slurries in the wellbore is calculated, and count Calculate the leak stopping slurries quantity into drop ply.
The pressure test instrument includes underground pressure sensor, down-hole pressure signal projector and terrestrial information processing Device;Underground pressure sensor and down-hole pressure signal projector connect and are lowered into pit shaft with leak stopping BHA, underground pressure Force snesor gathers liquid Pressure behaviour data, and by down-hole pressure signal projector that the Pressure behaviour data collected are real When transmit into terrestrial information processor, terrestrial information processor receives Pressure behaviour data, using wellbore fluids density and Pressure sensor position data calculate dynamic liquid level position.
The drop ply pressure is obtained by measurement, and pressure gauge is placed on into drop ply position measures drop ply pressure static number According to.
The drop ply pressure obtains according to drilling liquid position estimation when drop ply position and wellbore construction.
The drop ply pressure predicts to obtain according to geology.
The blocking construction scheme uses existing conventional blocking construction scheme.
Compared with prior art, technique effect beneficial caused by the present invention is shown:
1st, using monitoring pit shaft in blocking construction operation process(Annular space)Dynamic Liquid Surface situation, enter to grasp leak stopping slurries in real time Enter the quantity of drop ply, blocking construction operation is met blocking construction design requirement, improve leak stopping success rate to greatest extent, especially Improve the success rate of the hydraulic material leak stopping such as cement mortar.
2nd, drilling fluid dynamic Liquid Surface is measured data, and data are accurate;Drilling leakage blockage construction operation is synchronous with dynamic liquid level monitoring Carry out, blocking construction can be instructed in time, can effectively control leak stopping slurries to enter the quantity of drop ply, improve leak stopping success rate;We Method can not only monitor hydrodynamic face during blocking construction, can also monitor the hydrodynamic face during hydrostatic level, monitoring pumping liquid Change, improves the understanding to drop ply property;Pass during by further analyzing pumping liquid between pump pressure, discharge capacity and hydrodynamic face System, help to understand leakage channel to the relation between the sensitivity of pressure, leak-off velocity and leakage pressure difference.
Brief description of the drawings
Fig. 1 is present invention construction schematic diagram;
Reference:1st, pit shaft, 2, drop ply, 3, underground pressure sensor, 4, down-hole pressure signal projector, 5, at terrestrial information Manage device.
Embodiment
Embodiment 1
As a preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses:
A kind of pit shaft liquid level monitoring method for drilling leakage blockage construction, comprise the following steps:
Step A:According to the pressure of drop ply 2 and the blocking construction scheme chosen, the quiet of pit shaft 1 after the completion of blocking construction operation is estimated Liquid level position;
Step B:Pressure test instrument is connected with leak stopping BHA, and the pressure test instrument after connecting is put into pit shaft 1 In so that position of the pressure test instrument in pit shaft 1, below the hydrostatic level estimated in step A;
Step C:Blocking construction operation is proceeded by, starts pressure test instrument, monitors the dynamic Liquid Surface of pit shaft 1 in real time;
Step D:According to the dynamic Liquid Surface situation of pit shaft 1 monitored in step C, position of the leak stopping slurries in pit shaft 1 is calculated, and Calculate the leak stopping slurries quantity into drop ply 2.
Embodiment 2
As another preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses:
A kind of pit shaft liquid level monitoring method for drilling leakage blockage construction, comprise the following steps:
Step A:According to the pressure of drop ply 2 and the blocking construction scheme chosen, the quiet of pit shaft 1 after the completion of blocking construction operation is estimated Liquid level position;
Step B:Pressure test instrument is connected with leak stopping BHA, and the pressure test instrument after connecting is put into pit shaft 1 In so that position of the pressure test instrument in pit shaft 1, below the hydrostatic level estimated in step A;
Step C:Blocking construction operation is proceeded by, starts pressure test instrument, monitors the dynamic Liquid Surface of pit shaft 1 in real time;
Step D:According to the dynamic Liquid Surface situation of pit shaft 1 monitored in step C, position of the leak stopping slurries in pit shaft 1 is calculated, and Calculate the leak stopping slurries quantity into drop ply 2;
In the present embodiment, the liquid level monitoring method of pit shaft 1 of drilling leakage blockage construction can be embodied in:According to design, real brill Situation etc. estimates the minimum dynamic liquid level position of pit shaft 1;Described minimum dynamic liquid level position is hydrostatic level position;Passed by down-hole pressure The liquid level monitoring method of pit shaft 1 of the drilling leakage blockage of sensor 3 construction determines that the position of drill string should be accessed less than the position, under be drilled into it is predetermined Well depth, i.e. underground pressure sensor 3 gather the liquid pressure data below the liquid level;Open test system components, correction, debugging System;Head of liquid in real-time testing pit shaft 1;Tested during inactive state for fluid pressure, pumping liquid or blocking construction when Continuously, dynamic monitoring is hydrodynamic forces;Calculated using data such as the fluid density of pit shaft 1, pressure sensor positions or with supporting Software calculate distance of the well head away from liquid level position, the distance calculated using fluid pressure is hydrostatic level, using it is different when Between the distance that calculates of corresponding multiple hydrodynamic forces be hydrodynamic face.
Underground pressure sensor 3, down-hole pressure signal projector 4 are lowered into the minimum dynamic liquid level position of pit shaft 1 with drill string Hereinafter, gather liquid pressure information and real-time Transmission to ground, ground receiver to signal is simultaneously reduced into down-hole pressure data, finally Liquid level position is calculated using data such as the fluid density of pit shaft 1, pressure sensor positions.
Embodiment 3
As another preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses:
A kind of hydrodynamic face monitoring method of pit shaft 1 for drilling leakage blockage construction, comprise the following steps:
Step A. estimates pit shaft 1 after the completion of blocking construction operation according to the pressure of drop ply 2 and the blocking construction scheme chosen Hydrostatic level position;
Step B:Pressure test instrument is connected with leak stopping BHA, and the pressure test instrument after connecting is put into pit shaft 1 In so that position of the pressure test instrument in pit shaft 1, below the hydrostatic level estimated in step A;
Step C:Blocking construction operation is proceeded by, starts pressure test instrument, monitors the dynamic Liquid Surface of pit shaft 1 in real time;
Step D:According to the dynamic Liquid Surface situation of pit shaft 1 monitored in step C, position of the leak stopping slurries in pit shaft 1 is calculated, and Calculate the leak stopping slurries quantity into drop ply 2;
In the present embodiment, the pressure test instrument includes underground pressure sensor 3, down-hole pressure signal projector 4 and ground Face message handler 5;Underground pressure sensor 3 and down-hole pressure signal projector 4 connect and are lowered into leak stopping BHA In pit shaft 1, underground pressure sensor 3 gathers liquid Pressure behaviour data, and will be collected by down-hole pressure signal projector 4 Pressure behaviour real-time data transmission into terrestrial information processor 5, terrestrial information processor 5 receives Pressure behaviour data, Dynamic liquid level position is calculated using the fluid density of pit shaft 1 and pressure sensor position data.
In the present embodiment, the acquisition of the pressure of drop ply 2 can acquire according to actual condition, and its acquisition modes can be Using acquisition modes conventional in the prior art;For example, the pressure of drop ply 2 can be obtained by measurement, i.e., by by pressure Meter is placed on the position of drop ply 2 and measures the pressure static data of drop ply 2;Can also be according to drilling well when the position of drop ply 2 and wellbore construction Liquid liquid level position estimates what is obtained;It can also be and predict what is obtained according to geology;It is also not necessarily limited to be obtained only with aforesaid way Take, other conventional methods can also be used to obtain the pressure of drop ply 2.
In the present embodiment, the blocking construction scheme uses existing conventional blocking construction scheme.

Claims (2)

  1. A kind of 1. pit shaft liquid level monitoring method for drilling leakage blockage construction, it is characterised in that:Comprise the following steps:
    Step A:According to drop ply pressure and the blocking construction scheme chosen, pit shaft (1) after the completion of blocking construction operation is estimated Hydrostatic level position;
    Step B:Pressure test instrument is connected with leak stopping BHA, and the pressure test instrument after connecting is put into pit shaft (1) in so that position of the pressure test instrument in pit shaft (1), below the hydrostatic level estimated in step A;
    Step C:Blocking construction operation is proceeded by, starts pressure test instrument, monitors pit shaft (1) dynamic Liquid Surface in real time;
    Step D:According to pit shaft (1) the dynamic Liquid Surface situation monitored in step C, position of the leak stopping slurries in pit shaft (1) is calculated Put, and calculate the leak stopping slurries quantity into drop ply (2).
  2. A kind of 2. pit shaft liquid level monitoring method for drilling leakage blockage construction as claimed in claim 1, it is characterised in that:It is described Pressure test instrument includes underground pressure sensor (3), down-hole pressure signal projector (4) and terrestrial information processor (5);Well Lower pressure sensor (3) and down-hole pressure signal projector (4) connect with leak stopping BHA and are lowered into pit shaft (1), well Lower pressure sensor (3) gathers liquid Pressure behaviour data, and the pressure that will be collected by down-hole pressure signal projector (4) For dynamic data real-time Transmission into terrestrial information processor (5), terrestrial information processor (5) receives Pressure behaviour data, profit Dynamic liquid level position is calculated with pit shaft (1) fluid density and pressure sensor position data.
CN201711103399.6A 2017-11-10 2017-11-10 Shaft dynamic liquid level monitoring method for drilling plugging construction Active CN107605463B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110984978A (en) * 2020-01-03 2020-04-10 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Low-pressure natural gas well leakage speed mine field rapid evaluation device and method
CN114109367A (en) * 2021-11-25 2022-03-01 四川轻化工大学 Shaft annulus liquid level monitoring method and system
CN114109365A (en) * 2021-11-25 2022-03-01 四川轻化工大学 Dynamic liquid level monitoring equipment and method for drilling well

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110984978A (en) * 2020-01-03 2020-04-10 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Low-pressure natural gas well leakage speed mine field rapid evaluation device and method
CN114109367A (en) * 2021-11-25 2022-03-01 四川轻化工大学 Shaft annulus liquid level monitoring method and system
CN114109365A (en) * 2021-11-25 2022-03-01 四川轻化工大学 Dynamic liquid level monitoring equipment and method for drilling well

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Effective date of registration: 20200923

Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No.

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd.

Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province

Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd.