CN110886602A - Method, device and equipment for diagnosing water breakthrough time of oil well - Google Patents
Method, device and equipment for diagnosing water breakthrough time of oil well Download PDFInfo
- Publication number
- CN110886602A CN110886602A CN201810939882.6A CN201810939882A CN110886602A CN 110886602 A CN110886602 A CN 110886602A CN 201810939882 A CN201810939882 A CN 201810939882A CN 110886602 A CN110886602 A CN 110886602A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil well
- pressure
- well
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Abstract
The invention provides a method, a device and equipment for diagnosing water-breakthrough time of an oil well. The method provided by the invention has sensitive response to water breakthrough of the oil well and good early warning effect, can quickly judge the water breakthrough time after the water breakthrough of the oil well so as to take proper water control and oil stabilization measures as soon as possible, and provides a favorable basis for oil well management of the oil field and water breakthrough risk early warning of the oil well.
Description
Technical Field
The invention relates to the technical field of petroleum engineering, in particular to a method, a device and equipment for diagnosing water breakthrough time of an oil well.
Background
In the oil and gas exploitation process, because the oil-water relationship of an oil reservoir is complex and is controlled by different fracture-cavity units, water sealing exists locally, and meanwhile, the bottom of the oil reservoir has active strong bottom water, so that the phenomenon of water breakthrough of an oil well can occur. The following hazards are easily caused by improper treatment of water breakthrough of an oil well: 1) stopping the jet of the oil well: the water content is continuously increased after water breakthrough, and the weight of a shaft liquid column is increased, so that the blowout of the self-blowing oil well is stopped; 2) collapse of an oil well: the cemented loose rock is damaged, so that an oil well collapses, and even an oil layer is completely collapsed or the oil well stops production seriously; 3) residual oil cannot be extracted: the premature water breakthrough of the oil well can cause the formation of a dead oil zone in a reservoir, and the recovery rate of the oil well is greatly influenced; 4) and others: the corrosion of oil extraction ground equipment is increased, and the economic benefit is reduced;
in the prior art, the water content of an oil well is usually detected to judge the water breakthrough time of the oil well, the water breakthrough is judged when the water content of the oil well is increased, and the water content is usually more than 2% when the water breakthrough occurs. However, in the prior art, the water content of the oil well cannot be accurately detected, and the water breakthrough time of the oil well cannot be accurately judged, so that proper water control and oil stabilization measures cannot be timely taken when the water breakthrough occurs in the oil well, and the early warning effect is poor.
Disclosure of Invention
The invention provides a method, a device and equipment for diagnosing water breakthrough time of an oil well, which are used for quickly judging the water breakthrough time after the water breakthrough of the oil well, so as to take proper water control and oil stabilization measures as soon as possible and provide favorable basis for oil well management of the oil well and water breakthrough risk early warning of the oil well.
One aspect of the present invention provides a method for diagnosing a water breakthrough timing of an oil well, including:
acquiring real-time data of oil pressure and oil temperature in the oil well under the condition of keeping an oil well working system unchanged;
and judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well.
Optionally, the determining the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well specifically includes:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded;
and taking the current time as the water breakthrough time of the oil well.
Optionally, the determining the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well specifically includes:
if the oil pressure of the well head, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the oil pressure of the well head and the variation of the medium-deep flow pressure exceed a preset pressure threshold value, and the variation of the medium-deep flow temperature exceeds a preset temperature threshold value, judging that the oil well is exposed to water;
and taking the current time as the water breakthrough time of the oil well.
Further, the preset pressure threshold is 0.1-0.5 MPa.
Further, the preset temperature threshold is 0.2-1 ℃.
Further, the acquiring real-time data of oil pressure and oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged comprises:
under the condition of keeping the diameter of an oil nozzle of an oil well Christmas tree unchanged, acquiring real-time data of oil pressure and oil temperature in the oil well acquired by a temperature and flow pressure test gradiometer arranged in the oil well.
Another aspect of the present invention provides an oil well water breakthrough timing diagnosis apparatus including:
the acquisition module is used for acquiring real-time data of oil pressure and oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged;
and the processing module is used for judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well.
Further, the processing module is specifically configured to:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded;
taking the current moment as the water breakthrough time of the oil well; or
If the oil pressure of the well head, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the oil pressure of the well head and the variation of the medium-deep flow pressure exceed a preset pressure threshold value, and the variation of the medium-deep flow temperature exceeds a preset temperature threshold value, judging that the oil well is exposed to water;
and taking the current time as the water breakthrough time of the oil well.
Further, the preset pressure threshold is 0.1-0.5 MPa; the preset temperature threshold value is 0.2-1 ℃.
Further, the obtaining module is specifically configured to:
under the condition of keeping the diameter of an oil nozzle of an oil well Christmas tree unchanged, acquiring real-time data of oil pressure and oil temperature in the oil well acquired by a temperature and flow pressure test gradiometer arranged in the oil well.
Another aspect of the present invention provides an oil well water breakthrough timing diagnosis apparatus, including: the system comprises a flow temperature and flow pressure test gradiometer, a memory, a processor and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method as described above.
Further, the apparatus further comprises:
and the alarm device is used for alarming after judging that the oil well has water breakthrough.
The method, the device and the equipment for diagnosing the water breakthrough time of the oil well provided by the invention can be used for judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged. The method provided by the invention has sensitive response to water breakthrough of the oil well and good early warning effect, can quickly judge the water breakthrough time after the water breakthrough of the oil well so as to take proper water control and oil stabilization measures as soon as possible, and provides a favorable basis for oil well management of the oil field and water breakthrough risk early warning of the oil well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for diagnosing water breakthrough timing in an oil well according to an embodiment of the present invention;
FIG. 2 is a graph illustrating the variation of oil pressure in a well according to an embodiment of the present invention;
FIG. 3 is a graph showing changes in water content, daily fluid production, and daily oil production of the oil well of FIG. 2;
FIG. 4 is a graph of gas-to-liquid ratio and gas-to-oil ratio variation for the well of FIG. 2;
fig. 5 is a structural diagram of an oil well water breakthrough timing diagnosis device provided by an embodiment of the invention;
fig. 6 is a structural diagram of an oil well water breakthrough timing diagnosis apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a method for diagnosing water breakthrough timing of an oil well according to an embodiment of the present invention. As shown in fig. 1, the present embodiment provides a method for diagnosing water breakthrough time of an oil well, which comprises the following specific steps:
s101, acquiring real-time data of oil pressure and oil temperature in the oil well under the condition that the working system of the oil well is kept unchanged.
In this embodiment, the real-time data of the oil pressure and the oil temperature in the oil well collected by the temperature and flow pressure testing gradiometer arranged in the oil well can be adopted, and then the collected data can be obtained from the temperature and flow pressure testing gradiometer, wherein the temperature and flow pressure testing gradiometer can be remotely transmitted, transmitted and transmitted to a local pressure gauge or other display devices, and the display devices can be locally displayed or remotely transmitted to the controller, or the controller actively obtains the data from the temperature and flow pressure testing gradiometer. In the embodiment, because the oil pressure and the oil temperature in the oil well are easy to change when the working system of the oil well changes, the method judges the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well, so that the change of the oil pressure and the oil temperature in the oil well caused by the change of the working system of the oil well can generate certain interference on the judgment of the water breakthrough time of the oil well, the working system of the oil well needs to be kept unchanged in the embodiment, particularly, the diameter of an oil nozzle of a Christmas tree of the oil well needs to be kept unchanged, and the working system is generally and reasonably controlled to be.
S102, judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well.
In this embodiment, after the real-time data of the oil pressure and the oil temperature in the oil well is obtained, the water breakthrough timing of the oil well can be determined by analyzing the real-time data of the oil pressure and the oil temperature in the oil well. Specifically, under the condition that the working system of the oil well is not changed, the oil pressure suddenly rises due to the difference of oil-water interfaces when the oil well is exposed to water, and then the oil pressure drops. According to the bernoulli equation, the formation pressure expression is as follows:
Pground＝PWf+P+1/2(ρv2)
Wherein, PGroundIs the formation pressure, MPa; pWfIs bottom hole flowing pressure, MPa; p is the pressure converted from the well depth, MPa, and P is rho gH; h is the depth from the well bottom to the well head, m; rho is density, kg/m3；1/2(ρv2) Is a kinetic energy term; v is the fluid velocity, m/s;
Pground＝PWh+P+1/2(ρv2)+Δp
Wherein, PWhOil pressure of a well head; Δ p is the flow friction loss;
when the oil well breaks into water, the formation pressure expression is as follows:
Pground＝PWf+Pow+1/2(ρowv2)
Wherein, PowThe pressure converted from the well depth when the oil well breaks into water; rhoowThe density of oil-water mixture;
Pground＝PWh+Pow+1/2(ρowv2)+Δp
Normally a crude oil flow, when water is first broken through, the mixed liquor density increases because the viscosity of water is less than that of the oil. At the same timeDue to instantaneous output, other parameters of the formula are not changed in time, and wellhead oil pressure P is causedWhAnd (4) rising instantaneously. But when water continues to appear, the well water level gradually rises, resulting in PowIncrease, 1/2(ρ)owv2) Increase, and a small change in Δ P will inevitably result in PWhAnd (5) reducing the oil pressure of the wellhead. The medium and deep stream pressure rises and then falls, and the medium and deep stream temperature rises continuously (due to water, the specific heat capacity of oil and water is different).
As shown in fig. 2, 3, and 4, the above rule can be verified by analyzing the data of a certain oil well, and in fig. 2, for example, the oil pressure data rises and then falls in 2014 to 2015, and the water content rises significantly when the oil pressure rises, which is a water-break characteristic.
In this embodiment, the trend of change of the wellhead oil pressure, the medium-deep flow pressure, and the medium-deep flow temperature can be determined according to the analysis from the real-time data of the oil pressure and the oil temperature in the oil well, and the time of water breakthrough of the oil well can be determined according to the trend of change of the wellhead oil pressure, the medium-deep flow pressure, and the medium-deep flow temperature. Specifically, the water breakthrough of the oil well can be determined only when the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold; or determining the water breakthrough of the oil well when the medium-depth flowing pressure is judged to rise and the medium-depth flowing pressure variation exceeds a preset pressure threshold; and determining the water breakthrough of the oil well when the medium-depth flow temperature rises and the medium-depth flow temperature change amount exceeds a preset temperature threshold value.
Of course, the more parameters to be examined, the more accurate the judgment of the water breakthrough time of the oil well, the arbitrary combination of the three indexes of the wellhead oil pressure, the medium and deep flow pressure and the medium and deep flow temperature can be used as the judgment standard. For example, the water breakthrough of the oil well can be determined when the oil pressure of the wellhead and the medium-deep flowing pressure rise and the variation of the oil pressure of the wellhead and the variation of the medium-deep flowing pressure exceed the preset pressure threshold comprehensively; for another example, the water breakthrough of the oil well can be determined when the oil pressure of the wellhead, the medium-deep flowing pressure and the medium-deep flowing temperature are all judged to rise comprehensively, the variation of the oil pressure of the wellhead and the variation of the medium-deep flowing pressure exceed the preset pressure threshold, and the variation of the medium-deep flowing temperature exceeds the preset temperature threshold. Other combinations are not listed here.
Further, one of three indexes of wellhead oil pressure, medium and deep flow pressure and medium and deep flow temperature can be used as a preliminary judgment, and the other one or two indexes can be used for further verification, for example, when the wellhead oil pressure is judged to rise and the variation of the wellhead oil pressure exceeds a preset pressure threshold value, the oil well is preliminarily judged to be water breakthrough, then the medium and deep flow pressures and the medium and deep flow temperatures are judged, and if the medium and deep flow pressures and the medium and deep flow temperatures rise and exceed the preset pressure threshold value and the variation of the medium and deep flow pressures exceeds the preset temperature threshold value, the water breakthrough of the oil well is determined.
The method for diagnosing the water breakthrough time of the oil well is preferably applied to diagnosis of the water breakthrough time of the carbonate rock oil well, and the fast water logging of the oil well can be caused if the water breakthrough is not controlled well due to the strong heterogeneity of the carbonate rock, so that the production mode of pressing the cone for production must be adopted by adopting a small oil nozzle working system. When the diagnosis method for the water breakthrough opportunity of the oil well provided by the embodiment is used for diagnosing the water breakthrough opportunity of the carbonate oil well, three indexes of the wellhead oil pressure, the medium-deep flow pressure and the medium-deep flow temperature are changed obviously when the oil well breaks through water, and the wellhead oil pressure, the medium-deep flow pressure and the medium-deep flow temperature rise rapidly after breaking through water. Of course, the method of the embodiment can also be applied to diagnosis of the water breakthrough time of the sandstone oil well, but the well head oil pressure, the medium-deep flow pressure and the medium-deep flow temperature are gradually increased after water breakthrough of the sandstone oil well, and are relatively unobvious.
The method for diagnosing the water breakthrough time of the oil well provided by the embodiment acquires the real-time data of the oil pressure and the oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged, and then judges the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well. The method provided by the embodiment has the advantages of sensitive response to water breakthrough of the oil well and good early warning effect, can quickly judge the water breakthrough time after the water breakthrough of the oil well so as to take appropriate water control and oil stabilization measures as soon as possible, and provides a favorable basis for oil well management of the oil field and early warning of water breakthrough risk of the oil well.
On the basis of the foregoing embodiment, optionally, the determining the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well may specifically include:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded; and taking the current time as the water breakthrough time of the oil well.
Or if the wellhead oil pressure, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the wellhead oil pressure and the variation of the medium-deep flow pressure are all over a preset pressure threshold, and the variation of the medium-deep flow temperature is over a preset temperature threshold, judging that the oil well is flooded; and taking the current time as the water breakthrough time of the oil well.
In this embodiment, the preset pressure threshold may be set to a certain pressure value within a range of 0.1 to 0.5 MPa; the preset temperature threshold value can be set to be a certain temperature value within the range of 0.2-1 ℃. Furthermore, thresholds of different levels can be set for different oil well water breakthrough early warning levels.
On the basis of the embodiment, after the oil well is judged to be in water breakthrough, an alarm signal is sent to the alarm device to enable the alarm device to act, and workers are prompted to take corresponding measures, such as changing the working system and the like, so that unnecessary losses such as blowout, collapse or influence on the recovery ratio of the oil well are avoided.
Fig. 5 is a structural diagram of an oil well water breakthrough timing diagnosis apparatus according to an embodiment of the present invention. In the present embodiment, as shown in fig. 5, the oil well water breakthrough timing diagnostic apparatus according to the present embodiment may execute the processing flow provided by the above oil well water breakthrough timing diagnostic method, and includes: an acquisition module 201 and a processing module 202.
The acquiring module 201 is used for acquiring real-time data of oil pressure and oil temperature in the oil well under the condition that the working system of the oil well is kept unchanged;
and the processing module 202 is used for judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well.
In this embodiment, the real-time data of the oil pressure and the oil temperature in the oil well collected by the temperature and flow pressure testing gradiometer arranged in the oil well can be adopted, and then the collected data can be obtained from the temperature and flow pressure testing gradiometer, wherein the temperature and flow pressure testing gradiometer can be remotely transmitted, transmitted and transmitted to a local pressure gauge or other display devices, and the display devices can be locally displayed or remotely transmitted to the controller. The oil well water breakthrough opportunity diagnosis device of the embodiment acquires real-time data of oil pressure and oil temperature in the oil well acquired by the oil well water breakthrough opportunity diagnosis device from the temperature and flow pressure testing gradiometer through the acquisition module 201. In the embodiment, the time of water breakthrough of the oil well is judged according to real-time data of the oil pressure and the oil temperature in the oil well, so that the change of the oil pressure and the oil temperature in the oil well caused by the change of the oil well working system generates certain interference on the judgment of the time of water breakthrough of the oil well, the working system of the oil well needs to be kept unchanged in the embodiment, particularly, the diameter of an oil nozzle of a Christmas tree of the oil well needs to be kept unchanged, and the working system is generally and reasonably controlled to be about 4 mm.
In this embodiment, after the obtaining module 201 obtains the real-time data of the oil pressure and the oil temperature in the oil well, the processor analyzes the real-time data of the oil pressure and the oil temperature in the oil well, so as to determine the water breakthrough timing of the oil well, that is, the variation trends of the wellhead oil pressure, the medium-deep flow pressure and the medium-deep flow temperature are determined according to the real-time data of the oil pressure and the oil temperature in the oil well, and the water breakthrough timing of the oil well is determined according to the variation trends of the wellhead oil pressure, the medium-deep flow pressure and the medium-deep flow temperature.
Further, the processing module 202 is specifically configured to:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded; taking the current moment as the water breakthrough time of the oil well; or
If the oil pressure of the well head, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the oil pressure of the well head and the variation of the medium-deep flow pressure exceed a preset pressure threshold value, and the variation of the medium-deep flow temperature exceeds a preset temperature threshold value, judging that the oil well is exposed to water; and taking the current time as the water breakthrough time of the oil well.
Further, the preset pressure threshold is 0.1-0.5 MPa; the preset temperature threshold value is 0.2-1 ℃.
Further, the obtaining module 201 is specifically configured to:
under the condition of keeping the diameter of an oil nozzle of an oil well Christmas tree unchanged, acquiring real-time data of oil pressure and oil temperature in the oil well acquired by a temperature and flow pressure test gradiometer arranged in the oil well.
Furthermore, the device of the embodiment further comprises an alarm module, which is used for sending an alarm signal to the alarm device after judging that the oil well is in water breakthrough, so that the alarm device acts to prompt the staff to take corresponding measures, such as changing the working system and the like, so as to avoid causing unnecessary loss such as blowout, collapse or influence on the recovery ratio of the oil well.
The oil well water breakthrough timing diagnosis device provided by the embodiment may be specifically configured to execute the method embodiment provided by fig. 1, and specific functions are not described herein again.
The oil well water breakthrough timing diagnosis device provided by the embodiment acquires the real-time data of the oil pressure and the oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged, and then judges the water breakthrough timing of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well. The device provided by the embodiment has sensitive response to water breakthrough of the oil well and good early warning effect, can quickly judge the water breakthrough time after the water breakthrough of the oil well so as to take appropriate water control and oil stabilization measures as soon as possible, and provides a favorable basis for oil well management of the oil field and early warning of water breakthrough risk of the oil well.
Fig. 6 is a structural diagram of an oil well water breakthrough timing diagnosis apparatus according to an embodiment of the present invention. As shown in fig. 6, the present embodiment provides an oil well water breakthrough timing diagnosis apparatus, including: a flow temperature and flow pressure test gradiometer 301, a processor 302, a memory 303 and a computer program.
The flowing temperature and flowing pressure testing gradiometer 301 is disposed downhole and used for acquiring real-time data of oil pressure and oil temperature in the oil well, and the computer program is stored in the memory 303 and configured to be executed by the processor 302 to implement the processing procedure of the oil well water-break time diagnosis method according to the above embodiment, and specific functions are not described herein again.
Furthermore, the oil well water breakthrough opportunity diagnosis device of the embodiment further comprises an alarm device, which is used for prompting the staff to take corresponding measures after judging that the oil well has water breakthrough, such as changing the working system and the like, so as to avoid causing unnecessary losses such as blowout, collapse or influence on the recovery ratio of the oil well. The alarm device can be a buzzer, a warning lamp and the like. In addition, a communication unit 304 may also be included for receiving and transmitting operational instructions and data.
The oil well water breakthrough timing diagnosis device provided by the embodiment acquires real-time data of oil pressure and oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged, and then judges the water breakthrough timing of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well. The device provided by the embodiment has sensitive response to water breakthrough of the oil well and good early warning effect, can quickly judge the water breakthrough time after the water breakthrough of the oil well so as to take appropriate water control and oil stabilization measures as soon as possible, and provides a favorable basis for oil well management of the oil field and early warning of water breakthrough risk of the oil well.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An oil well water breakthrough opportunity diagnosis method is characterized by comprising the following steps:
acquiring real-time data of oil pressure and oil temperature in the oil well under the condition of keeping an oil well working system unchanged;
judging the water-breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well;
the time of water breakthrough of the oil well is judged according to the real-time data of the oil pressure and the oil temperature in the oil well, and the method specifically comprises the following steps:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded;
and taking the current time as the water breakthrough time of the oil well.
2. The method according to claim 1, wherein the determining the water breakthrough timing of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well specifically comprises:
if the oil pressure of the well head, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the oil pressure of the well head and the variation of the medium-deep flow pressure exceed a preset pressure threshold value, and the variation of the medium-deep flow temperature exceeds a preset temperature threshold value, judging that the oil well is exposed to water;
and taking the current time as the water breakthrough time of the oil well.
3. The method according to claim 2, wherein the preset pressure threshold is 0.1-0.5 MPa.
4. The method according to claim 2, wherein the preset temperature threshold is 0.2-1 ℃.
5. The method of claim 1, wherein said obtaining real-time data of oil pressure and oil temperature in the well while maintaining the well operating regime comprises:
under the condition of keeping the diameter of an oil nozzle of an oil well Christmas tree unchanged, acquiring real-time data of oil pressure and oil temperature in the oil well acquired by a temperature and flow pressure test gradiometer arranged in the oil well.
6. An oil well water breakthrough opportunity diagnosis device, comprising:
the acquisition module is used for acquiring real-time data of oil pressure and oil temperature in the oil well under the condition of keeping the working system of the oil well unchanged;
the processing module is used for judging the water breakthrough time of the oil well according to the real-time data of the oil pressure and the oil temperature in the oil well;
the processing module is specifically configured to:
if the oil pressure of the wellhead rises and the variation of the oil pressure of the wellhead exceeds a preset pressure threshold, judging that the oil well is flooded;
taking the current moment as the water breakthrough time of the oil well; or
If the oil pressure of the well head, the medium-deep flow pressure and the medium-deep flow temperature are all increased, the variation of the oil pressure of the well head and the variation of the medium-deep flow pressure exceed a preset pressure threshold value, and the variation of the medium-deep flow temperature exceeds a preset temperature threshold value, judging that the oil well is exposed to water;
and taking the current time as the water breakthrough time of the oil well.
7. The device according to claim 6, wherein the preset pressure threshold is 0.1-0.5 MPa; the preset temperature threshold value is 0.2-1 ℃.
8. The apparatus of claim 6, wherein the obtaining module is specifically configured to:
under the condition of keeping the diameter of an oil nozzle of an oil well Christmas tree unchanged, acquiring real-time data of oil pressure and oil temperature in the oil well acquired by a temperature and flow pressure test gradiometer arranged in the oil well.
9. An oil well water breakthrough opportunity diagnosis apparatus, characterized by comprising: the system comprises a flow temperature and flow pressure test gradiometer, a memory, a processor and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-5.
10. The apparatus of claim 9, further comprising:
and the alarm device is used for alarming after judging that the oil well has water breakthrough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810939882.6A CN110886602B (en) | 2018-08-17 | 2018-08-17 | Method, device and equipment for diagnosing water breakthrough time of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810939882.6A CN110886602B (en) | 2018-08-17 | 2018-08-17 | Method, device and equipment for diagnosing water breakthrough time of oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110886602A true CN110886602A (en) | 2020-03-17 |
| CN110886602B CN110886602B (en) | 2022-10-04 |
Family
ID=69744229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810939882.6A Active CN110886602B (en) | 2018-08-17 | 2018-08-17 | Method, device and equipment for diagnosing water breakthrough time of oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110886602B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513301A (en) * | 2020-04-09 | 2021-10-19 | 中国石油化工股份有限公司 | Online water-containing real-time detection system based on electric pump sensor and detection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141490A (en) * | 2014-07-17 | 2014-11-12 | 中国石油天然气股份有限公司 | Method and device for judging single-well water invasion situation of water-carrying gas reservoir and controlling gas well production |
| CN104504604A (en) * | 2014-12-12 | 2015-04-08 | 中国地质大学（武汉） | Method for qualifying liquid loading of gas well |
| CN105956712A (en) * | 2016-05-18 | 2016-09-21 | 恒泰艾普（北京）能源科技研究院有限公司 | Fracture-vug type carbonate reservoir water breakthrough early warning method |
| CN106779229A (en) * | 2016-12-26 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of High water cut water plugging of horizontal well Potential Prediction method |
-
2018
- 2018-08-17 CN CN201810939882.6A patent/CN110886602B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141490A (en) * | 2014-07-17 | 2014-11-12 | 中国石油天然气股份有限公司 | Method and device for judging single-well water invasion situation of water-carrying gas reservoir and controlling gas well production |
| CN104504604A (en) * | 2014-12-12 | 2015-04-08 | 中国地质大学（武汉） | Method for qualifying liquid loading of gas well |
| CN105956712A (en) * | 2016-05-18 | 2016-09-21 | 恒泰艾普（北京）能源科技研究院有限公司 | Fracture-vug type carbonate reservoir water breakthrough early warning method |
| CN106779229A (en) * | 2016-12-26 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of High water cut water plugging of horizontal well Potential Prediction method |
Non-Patent Citations (1)
| Title |
|---|
| 罗娟 等: "《塔河油田缝洞型油藏高产油井见水预警评价技术》", 《石油勘探与开发》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513301A (en) * | 2020-04-09 | 2021-10-19 | 中国石油化工股份有限公司 | Online water-containing real-time detection system based on electric pump sensor and detection method thereof |
| CN113513301B (en) * | 2020-04-09 | 2024-03-15 | 中国石油化工股份有限公司 | Online water content real-time detection system based on electric pump sensor and detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110886602B (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2610427B1 (en) | Apparatuses and methods for determining wellbore influx condition using qualitative indications | |
| Riza et al. | A pragmatic approach to understanding liquid loading in gas wells | |
| CN106194165A (en) | Gas hydrates blocking monitoring device and method in the test of deep water gas well | |
| CN104504611B (en) | A kind of determining gas well whether the method for hydrops and its hydrops degree | |
| US20140209384A1 (en) | Method and system for detecting changes in drilling fluid flow during drilling operations | |
| CN103291284A (en) | Method and device both based on annulus pressure measuring while drilling and for early monitoring gas invasion of wellhole | |
| CN104504604B (en) | A kind of method of qualitative Wellbore of Gas Wells hydrops | |
| CN104632158B (en) | Oil well response stage dividing and distinguishing method under carbon dioxide miscible displacement condition | |
| CN102828709B (en) | Well-drilling safety intelligent monitoring method and well-drilling safety monitoring alarming device | |
| CN105298472A (en) | Gas cutting early stage monitoring method | |
| CN107480383A (en) | A kind of method by pressure measurement data monitoring water filling dynamic crack | |
| CN110886602B (en) | Method, device and equipment for diagnosing water breakthrough time of oil well | |
| CN105822264B (en) | Gas hydrates layer bored shaft hydrate dynamic Decomposition method for detecting position | |
| US20170145763A1 (en) | Drilling Rig and Method of Operating It | |
| CN107567532A (en) | Lifted by nitrogen, production logging and recovery test extend the method for carrying out well testing operation with single coiled tubing | |
| CN114517675A (en) | Evaluation equipment and evaluation method for leakage and overflow monitoring instrument of three-high gas well | |
| CN105804725B (en) | Petroleum underground non-contact ultrasonic liquid level monitoring system | |
| CN204511424U (en) | Non-contact type ultrasonic level monitoring system under a kind of oil well | |
| Kunju et al. | Fixed Choke Constant Outflow Circulation Method for Riser Gas Handling: Full-Scale Tests in Water-and Synthetic-Based Mud with Gauges and Distributed Fiber-Optic Sensors | |
| US2340993A (en) | Method of testing wells | |
| Carpenter | Stuck-pipe prediction with automated real-time modeling and data analysis | |
| CN206694020U (en) | The device of gas cut is monitored in real time using the pressure wave signal of measurement while drilling instrument | |
| US3410137A (en) | Well pressure data testing method | |
| CN112253022B (en) | Well completion method and well completion equipment | |
| Juan et al. | A water breakthrough warning system of high-yield wells in fracture-cavity reservoirs in Tahe Oilfield |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |