CN105569623A - Combined wellhead testing device for injection well and combined wellhead testing method - Google Patents
Combined wellhead testing device for injection well and combined wellhead testing method Download PDFInfo
- Publication number
- CN105569623A CN105569623A CN201510940325.2A CN201510940325A CN105569623A CN 105569623 A CN105569623 A CN 105569623A CN 201510940325 A CN201510940325 A CN 201510940325A CN 105569623 A CN105569623 A CN 105569623A
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- well
- pressure
- well head
- liquid level
- implanted layer
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000010998 test method Methods 0.000 claims description 7
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 19
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a combined wellhead testing device for an injection well. A high-precision pressure monitor and a continuous liquid level monitor of the combined wellhead testing device are connected with a three-way valve in a combined way; and the combined wellhead testing device is mounted on a pipeline of an injection layer. The invention further relates to a combined wellhead testing method. The combined wellhead testing method sequentially comprises the following steps: inspecting airtightness of the combined wellhead testing device, and mounting the combined wellhead testing device on the pipeline of the injection layer; closing the injection well, and testing the wellhead pressure and the liquid level of the injection layer; according to test values of the wellhead pressure and the liquid level of the injection layer, calculating the well bottom pressure of the injection layer; according to the well bottom pressure of the injection layer, selecting a corresponding pressure monitoring well test model; fitting the well bottom pressure of the injection layer with the corresponding pressure monitoring well test model to obtain well test interpretation parameters, and through the well test interpretation parameters, judging waterflood front position or analyzing a high-permeability strip. Through the technical scheme, the problem of missing of pressure testing data, caused by independent wellhead pressure testing, can be solved.
Description
Technical field
The invention belongs to oil-gas reservoir production technique field, be specifically related to a kind of well head combined measuring device for water injection well and method thereof.
Background technology
Well test analysis is the more important means of Reservoir performance monitoring rate, well test data for determining Oil-gas Accumulation Types, carry out pool description, formulate oilfield development program and prediction oil field dynamic research etc. there is very important effect.The method of testing generally adopted at present is shut-in pressure survey method, this method of testing needs at shaft bottom setting pressure meter, and the cost of setting pressure meter is huge, and sometimes because therefore the impact of tubular column structure by the bottom of pressure gauge lower going-into-well, cannot propose the method being converted into bottom pressure by shaft mouth test pressure again.But ooze reservoir for some height, well-head pressure-measuring exists again a serious problem, namely after closing well, liquid level declines very fast, and this will cause in well head monitoring less than pressure data, thus cause pressure measurement data imperfect.
It is dynamic that water-drive pool can monitor displacement, based on the problems referred to above, be badly in need of a kind of well head combined measuring device for water injection well of exploitation and method thereof, with while monitor well mouth pressure and liquid level, made an explanation by pressure monitoring well test model again, and utilize interpretation parameters judge waterflood front position or analyze high infiltration strip.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of well head combined measuring device for water injection well, comprise high-precision pressure monitor, continuously liquid level monitor and three-way valve, described high-precision pressure monitor and described continuous liquid level monitor and described three-way valve are connected; The pipeline of implanted layer is installed well head combined measuring device.
Injection Well of the present invention has an implanted layer, and the pipeline of this implanted layer installs a well head combined measuring device.Injection Well arranges oil pipe and sleeve pipe from inside to outside, and implanted layer is in the bottom of oil pipe.Injection Well is arranged block valve I, block valve II, main valve and pressure meter.The thread of well head combined measuring device is connected with pipeline.By in water Injection Well, water flows into implanted layer, and the well head combined measuring device being arranged on well head monitors well head pressure and the level of implanted layer simultaneously.
Preferably, a port of described three-way valve arranges thread, and another two ports arrange described high-precision pressure monitor and described continuous liquid level monitor respectively.The precision of high-precision pressure monitor is high, density is large, for shaft mouth test pressure accurately; Continuous liquid level monitor is for monitoring the degree of depth of liquid level.Pressure meter is used for daily observation oil well and operationally whether occurs abnormal conditions.
In above-mentioned either a program preferably, described thread is connected with pipeline.
The present invention also provides a kind of well head combined test method for water injection well, and it comprises the following steps according to sequencing:
Step one: the sealing checking well head combined measuring device, and attach it on the pipeline of implanted layer;
Step 2: close Injection Well, test well head pressure and the liquid level of implanted layer simultaneously;
Step 3: the bottom pressure calculating implanted layer according to the well head pressure of implanted layer and the test value of liquid level;
Step 4: select corresponding pressure monitoring well test model according to the bottom pressure of implanted layer;
Step 5: the bottom pressure of implanted layer and corresponding pressure monitoring well test model are carried out matching, obtains well test analysis parameter, and judge waterflood front position by well test analysis parameter, analyze high infiltration strip.
Preferably, described well head combined measuring device is the above-mentioned well head combined measuring device for water injection well described in any one.
In above-mentioned either a program preferably, in described step 3, the computation model of bottom pressure is
p
wf＝p
h+ρ
pg(H-h)
Wherein, p
wf---bottom pressure, Pa;
P
h---well head pressure, Pa;
ρ
w---the density of water, kg/m
3;
H---the degree of depth in the middle part of implanted layer, m;
The degree of depth of h---liquid level, m.
It should be noted that, in that time of firm closing well, well head pressure is larger, may more than 8MPa, these data are shown by the pressure meter of implanted layer, and the maximum range of liquid level monitor is 8MPa continuously, therefore while closing well, the valve of continuous liquid level monitor in well head combined measuring device need be closed.When the pressure gauge reading of implanted layer is lower than 8MPa, just can open valve, now liquid level monitor is started working continuously.
Well head combined measuring device for water injection well of the present invention and method thereof, its apparatus structure is simple, and method of operating is convenient, practical, solves because of the excessive difficult problem of closing well lower going-into-well downforce meter cost.By while monitor well mouth pressure and level calculate bottom pressure, avoid because liquid level declines the problem causing pressure data to lack.This technical scheme can solve the problem that independent well-head pressure-measuring causes pressure measurement shortage of data on the one hand, can obtain well test analysis parameter on the other hand by pressure monitoring well test model, and utilizes well test analysis parameter judge waterflood front position or analyze high infiltration strip.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the well head combined measuring device for the well head combined measuring device of water injection well and a preferred embodiment of method thereof of the present invention;
Fig. 2 is the application schematic diagram according to the well head combined measuring device for the well head combined measuring device of water injection well and the embodiment illustrated in fig. 1 of method thereof of the present invention;
Fig. 3 is according to the process chart for the well head combined measuring device of water injection well and the method for testing embodiment illustrated in fig. 1 of method thereof of the present invention;
Fig. 4 is according to the matched curve for the well head combined measuring device of water injection well and the bottom pressure embodiment illustrated in fig. 1 of method and corresponding pressure monitoring well test model of the present invention;
Fig. 5 is for the well head combined measuring device of water injection well and the bottom pressure of another embodiment of method thereof and the matched curve of corresponding pressure monitoring well test model according to of the present invention.
Figure labeling description:
1-well head combined measuring device, 11-high-precision pressure monitor, the continuous liquid level monitor of 12-, 13-three-way valve, 14-thread;
2-Injection Well, 21-implanted layer, 22-oil pipe, 23-sleeve pipe, 24-block valve I, 25-block valve II, 26-main valve, 27-pressure meter.
Detailed description of the invention
In order to further understand summary of the invention of the present invention, elaborate the present invention below in conjunction with specific embodiment.
Embodiment one:
As shown in Figure 1, according to an embodiment of the well head combined measuring device 1 for water injection well of the present invention, comprise high-precision pressure monitor 11, continuously liquid level monitor 12 and three-way valve 13, described high-precision pressure monitor 11 and described continuous liquid level monitor 12 are connected with described three-way valve 13; The pipeline of implanted layer is installed well head combined measuring device 1.
As shown in Figure 2, the Injection Well 2 of the present embodiment has an implanted layer 21, and the pipeline of this implanted layer 21 installs a well head combined measuring device 1.Injection Well 2 arranges oil pipe 22 and sleeve pipe 23 from inside to outside, and implanted layer 21 is in the bottom of oil pipe 22.Injection Well 2 is arranged block valve I 24, block valve II 25, main valve 26 and pressure meter 27.The thread 14 of well head combined measuring device 1 is connected with pipeline.By in water Injection Well, water flows into implanted layer 21, and the well head combined measuring device 1 being arranged on well head monitors well head pressure and the level of implanted layer simultaneously.
A port of described three-way valve 13 arranges thread 14, and another two ports arrange described high-precision pressure monitor 11 and described continuous liquid level monitor 12 respectively.The precision of high-precision pressure monitor is high, density is large, for shaft mouth test pressure accurately; Continuous liquid level monitor is for monitoring the degree of depth of liquid level.Pressure meter is used for daily observation oil well and operationally whether occurs abnormal conditions.Described thread is connected with pipeline.
As shown in Figure 3, according to an embodiment of the well head combined test method for water injection well of the present invention, use above-mentioned well head combined measuring device, it comprises the following steps according to sequencing:
Step one: the sealing checking well head combined measuring device, and attach it on the pipeline of implanted layer;
Step 2: close Injection Well, test well head pressure and the liquid level of implanted layer simultaneously;
Step 3: the bottom pressure calculating implanted layer according to the well head pressure of implanted layer and the test value of liquid level;
Step 4: select corresponding pressure monitoring well test model according to the bottom pressure of implanted layer;
Step 5: the bottom pressure of implanted layer and corresponding pressure monitoring well test model are carried out matching, obtains well test analysis parameter, and judge waterflood front position by well test analysis parameter.
In described step 3, the computation model of bottom pressure is
p
wf＝p
h+ρ
pg(H-h)
Wherein, p
wf---bottom pressure, Pa;
P
h---well head pressure, Pa;
ρ
w---the density of water, kg/m
3;
H---the degree of depth in the middle part of implanted layer, m;
The degree of depth of h---liquid level, m.
It should be noted that, in that time of firm closing well, well head pressure is larger, may more than 8MPa, these data are shown by the pressure meter of implanted layer, and the maximum range of liquid level monitor is 8MPa continuously, therefore while closing well, the valve of continuous liquid level monitor in well head combined measuring device need be closed.When the pressure gauge reading of implanted layer is lower than 8MPa, just can open valve, now liquid level monitor is started working continuously.
The bottom pressure of implanted layer and the matched curve of corresponding pressure monitoring well test model as shown in Figure 4, can judge waterflood front position according to well test analysis parameter.
The well head combined measuring device for water injection well of the present embodiment and method thereof, its apparatus structure is simple, and method of operating is convenient, practical, solves because of the excessive difficult problem of closing well lower going-into-well downforce meter cost.By while monitor well mouth pressure and level calculate bottom pressure, avoid because liquid level declines the problem causing pressure data to lack.This technical scheme can solve the problem that independent well-head pressure-measuring causes pressure measurement shortage of data on the one hand, can obtain well test analysis parameter on the other hand, and utilize well test analysis parameter to judge waterflood front position by pressure monitoring well test model.
Embodiment two:
According to the well head combined measuring device for water injection well of the present invention and method thereof, the structure of its device, operating procedure, principle and beneficial effect etc. are all identical with embodiment one, unlike: in described step 5, the bottom pressure of implanted layer and corresponding pressure monitoring well test model are carried out matching, obtain well test analysis parameter, and by well test analysis Parameter analysis high infiltration strip.The bottom pressure of implanted layer and the matched curve of corresponding pressure monitoring well test model are as shown in Figure 5.
Those skilled in the art are understood that, well head combined measuring device for water injection well of the present invention and method thereof comprise the summary of the invention of the invention described above manual and any combination of detailed description of the invention part and each several part shown by accompanying drawing, as space is limited and not have each scheme of these combination formations to describe one by one for making manual simple and clear.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. for a well head combined measuring device for water injection well, comprise high-precision pressure monitor, continuously liquid level monitor and three-way valve, it is characterized in that: described high-precision pressure monitor and described continuous liquid level monitor and described three-way valve are connected; The pipeline of implanted layer is installed well head combined measuring device.
2., as claimed in claim 1 for the well head combined measuring device of water injection well, it is characterized in that: a port of described three-way valve arranges thread, another two ports arrange described high-precision pressure monitor and described continuous liquid level monitor respectively.
3., as claimed in claim 2 for the well head combined measuring device of water injection well, it is characterized in that: described thread is connected with pipeline.
4., for a well head combined test method for water injection well, it comprises the following steps according to sequencing:
Step one: the sealing checking well head combined measuring device, and attach it on the pipeline of implanted layer;
Step 2: close Injection Well, test well head pressure and the liquid level of implanted layer simultaneously;
Step 3: the bottom pressure calculating implanted layer according to the well head pressure of implanted layer and the test value of liquid level;
Step 4: select corresponding pressure monitoring well test model according to the bottom pressure of implanted layer;
Step 5: the bottom pressure of implanted layer and corresponding pressure monitoring well test model are carried out matching, obtains well test analysis parameter, and judge waterflood front position by well test analysis parameter, analyze high infiltration strip.
5., as claimed in claim 4 for the well head combined test method of water injection well, it is characterized in that: the well head combined measuring device for water injection well of described well head combined measuring device according to any one of claim 1-3.
6., as claimed in claim 4 for the well head combined test method of water injection well, it is characterized in that: in described step 3, the computation model of bottom pressure is
p
wf＝p
h+ρ
pg(H-h)
Wherein, p
wf---bottom pressure, Pa;
P
h---well head pressure, Pa;
ρ
w---the density of water, kg/m
3;
H---the degree of depth in the middle part of implanted layer, m;
The degree of depth of h---liquid level, m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510940325.2A CN105569623B (en) | 2015-12-16 | 2015-12-16 | Well head combined measuring device and its method for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510940325.2A CN105569623B (en) | 2015-12-16 | 2015-12-16 | Well head combined measuring device and its method for water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569623A true CN105569623A (en) | 2016-05-11 |
| CN105569623B CN105569623B (en) | 2018-07-20 |
Family
ID=55880179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510940325.2A Active CN105569623B (en) | 2015-12-16 | 2015-12-16 | Well head combined measuring device and its method for water injection well |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374653A (en) * | 2018-02-01 | 2018-08-07 | 中国石油大学(华东) | A kind of multi-functional water injection string and pressure testing method and pressure measurement short |
| CN111894554A (en) * | 2020-09-02 | 2020-11-06 | 中国石油天然气集团有限公司 | Multi-size pipe diameter self-adaptive sealing underground liquid level monitoring system |
| US11643922B2 (en) | 2021-07-07 | 2023-05-09 | Saudi Arabian Oil Company | Distorted well pressure correction |
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| CN204419164U (en) * | 2015-01-12 | 2015-06-24 | 翟晓东 | Oil well liquid output pressure and temp admission integrated device |
| CN105019894A (en) * | 2015-07-29 | 2015-11-04 | 长江大学 | Method and system for establishing multilayer oil pool inter-well connectivity model |
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2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374653A (en) * | 2018-02-01 | 2018-08-07 | 中国石油大学(华东) | A kind of multi-functional water injection string and pressure testing method and pressure measurement short |
| CN108374653B (en) * | 2018-02-01 | 2020-09-18 | 中国石油大学(华东) | Multifunctional water injection pipe column, pressure measuring method and pressure measuring nipple |
| CN111894554A (en) * | 2020-09-02 | 2020-11-06 | 中国石油天然气集团有限公司 | Multi-size pipe diameter self-adaptive sealing underground liquid level monitoring system |
| US11643922B2 (en) | 2021-07-07 | 2023-05-09 | Saudi Arabian Oil Company | Distorted well pressure correction |
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| Publication number | Publication date |
|---|---|
| CN105569623B (en) | 2018-07-20 |
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