CN1261669C - Layering injection amount and layering pressure test-free storage direct-reading method - Google Patents
Layering injection amount and layering pressure test-free storage direct-reading method Download PDFInfo
- Publication number
- CN1261669C CN1261669C CN 02156697 CN02156697A CN1261669C CN 1261669 C CN1261669 C CN 1261669C CN 02156697 CN02156697 CN 02156697 CN 02156697 A CN02156697 A CN 02156697A CN 1261669 C CN1261669 C CN 1261669C
- Authority
- CN
- China
- Prior art keywords
- pressure
- water
- layering
- flowing
- flow
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to a layering water injection amount and layering pressure test-free storage direct-reading method which belongs to the field of oil field development and solves the problem that the layering injection amount of the existing water injection well has to be repeatedly adjusted and tested and can not be directly read. The present invention is characterized in that a flowing amount and pressure storing measurer is additionally provided with a water faucet to be thrown into a water distributor on a water injection layer. The water injection pressure is continuously changed on ground, and a flowing amount sensor and two pressure sensors are used for recording the values of the flowing amount, the flowing pressure IN and the flowing pressure OUT in the water absorbing process of each layer segment in a synchronous mode in order to establish flowing amount and pressure curves. A sampling value is selected in the same time of the flowing curve and the pressure curve in order to select each water injection pressure difference (the flowing pressure IN-the flowing pressure OUT) and the corresponding flowing amount value. A relationship template using the value of the water injection pressure difference as ordinate and the corresponding flowing amount as the abscissa is established. The present invention can realize the water injection amount and layering pressure test-free storage direct-reading technology, provides a new method for the layering flowing amount and layering pressure tests of an oil field, saves a great number of constructors and test instruments, and has high benefit.
Description
Technical field:
How the separate water injection well layering injection rate, the zonal pressure that the present invention relates to the oil field development field are tested its value and are reflected the method how value changes, and belong to layering injection rate and zonal pressure and exempt from the test storage direct-read method.
Background technology:
The layering injection rate of the separate water injection well in oil field need be known by means of testing at present, usually by following process:
Behind corresponding water nozzle in each interval input, after treating that well head pressure is stable, utilize the down-hole electronic grout flow meter that each interval injection rate and total injection rate are tested, will test injection rate then and geological scheme injection allocation amount compares, judge whether each interval injection rate meets the requirements.If do not meet the geological scheme requirement, also to reselect the water nozzle size, pull former water nozzle out and throw in again, test is carried out repeatedly again, and till choosing one group of balance collocation water nozzle and making each interval injection rate of test and the requirement of injection allocation amount is consistent, repeated workload is big.Therefore, this test process can only carry out when the transposing water nozzle by rule of thumb, and exploratory work is big, and repetitive operation is many, is difficult to hold, and is not popular with users, is subjected to certain limitation.
The test traffic method is used down-hole electronic grout flow meter and testing seal section exactly, down to subordinate injection well downhole flow regulator, measure the flow in each interval injection well downhole flow regulator main channel from top to bottom, each interval that part of value of measuring corresponding minimizing is promptly thought the injection rate of this interval so.Thereby measured the injection rate of each interval indirectly.But this method is owing to necessary use test seal section, and its effect is conflux and location.And the conflux effect is that the water of the injection well downhole flow regulator main channel of flowing through is sealed fully, all by tester, so that monitoring.There is 10%～20% wastage in this method.
This method of testing achievement is selected when using under three kinds or the five kinds of well head water injection pressures (being a test pressure point to differ 0.3～0.5Mpa generally) exactly, and under with a kind of water nozzle size assortment, measure three or five corresponding data under the relevant pressure, make a suction indicative curve with this data again, artificial minute water of each interval when instructing that next time, cycle testing time internal pressure changed.Therefore, even the injection rate of each interval when utilizing the suction indicative curve can convert out each interval pressure variation, still, owing to be subjected to the influence of interlayer suction difference, can not know each interval real injection rate every day, this dividing method for water also is stressed and changes the influence of boundary simultaneously at all.
The delaminating pressure testing in oil field is usually by following approach at present:
The delaminating pressure testing technology is in the layering well of the normal water filling of a bite, and the water nozzle of target zone is pulled out, changes the stopper type pressure gauge of a dead volume.Sampling then, storage.But this technology has been destroyed original water nozzle collocation balance fully, owing to there is interlayer suction difference, has had influence on the target zone injection rate of interval in addition.The PRESSURE DATA that this technology is enrolled is this interval pressure recovery situation and change the data of speed after target zone stops annotating, and this data and water absorption is not united synchronously, more can't be applied on the seperated layer water injection measuring technology.In addition, because this technology is subjected to the restriction of pressure measurement instrument battery performance, the working time is about one month, satisfies the requirement that test pressure recovers fully in the oil field of height infiltration, can not monitor out qualified curve to extra permeability oilfield, can't realize curve fit.
As seen the layering injection rate method of testing of present known separate water injection well and process are numerous and diverse and don't accurate and test with zonal pressure to be separately to carry out, thereby make the injection rate of same interval and two the closest parameters of water injection pressure not possess unity, can't use each other, analyze, make troubles to the decision-making of oil field exploitation.Though measuring appliance (number of patent application is 02224753.x) more than continuous operation half a year, but to the user is a kind of equipment, do not have concrete method, can not make people fundamentally understand the layering injection rate test of water injection well and the superiority of the synchronism detection that zonal pressure is tested.
Summary of the invention:
Must debug numerous and diverse and don't accurate problem repeatedly in order to solve existing water injection well layering injection rate, the invention provides a kind of layering injection rate and zonal pressure and exempt from the test storage direct-read method, this method can disposablely choose water nozzle and can the recording occurring continuously injection rate and water injection pressure poor.
Adoptable technical scheme is: this method at first adds the 12mm water nozzle on flow, pressure storage measuring appliance, throw on the injection well downhole flow regulator in the water filling layer; Continuously change water injection pressure on ground, utilize flow transmitter and two pressure sensors to write down flow, the stream of each interval in water absorption course and press IN and stream to press the OUT value, set up flow, pressure curve with the method for synchronization; Synchronization on flow, pressure curve is chosen sample value, with each water injection pressure chosen poor (stream presses IN-stream to press OUT) and respective streams value; Foundation is ordinate with the water flooding pressure differences, is the template that concerns of abscissa with corresponding flow with it;
Above-mentioned water nozzle is of a size of 12mm～1.8mm, concerns that template can be the template that concerns of the different water nozzle sizes of a series of different injection intervals.
Therefore the beneficial effect of this method is: because this method can the flow of each interval of synchronous recording in water absorption course, stream presses IN and stream to press the OUT value, foundation is ordinate with the water flooding pressure differences, with corresponding flow with it is the template that concerns of abscissa, the accurate water nozzle size of disposable selection in the time of can realizing the water injection rate test, and realize the layering injection rate, the storage of zonal pressure and direct-reading, the zonal pressure of being surveyed can not destroy original water injection pressure balance, complete delaminating pressure testing is carried out in the oil field provides technical guarantee, the problem of flow leakage during storage flow periodical examination method is avoided testing; Moreover test traffic and delaminating pressure testing are carried out synchronously, saved a large amount of construction teams and tester, benefit is very big.
Description of drawings:
Accompanying drawing 1 is the template that concerns of the present invention.
Accompanying drawing 2 is water injection pressure curves.
The specific embodiment:
Below with the present invention is further illustrated:
This layering injection rate and zonal pressure are exempted from the test storage direct-read method, at first store on the measuring appliance and add the water nozzle that is of a size of 12mm～1.8mm at flow, the pressure of prior art, to realize general down-hole string structure at present, then measuring appliance is thrown on the injection well downhole flow regulator in the water filling layer; Continuously change water injection pressure on ground, utilizing flow transmitter and two pressure sensors to write down flow, the stream of each interval in water absorption course with the method for synchronization presses IN and stream to press the OUT value, (wherein stream presses IN to refer to the inclined to one side hole plug device of layering well interval injection well downhole flow regulator inlet opening front end place pressure, and its value equals to add that from well head to the injection well downhole flow regulator pressure and hydrostatic pressure well head comes water pressure in the oil pipe to set up flow, pressure curve; Stream presses OUT to refer to the outer end pressure of the inclined to one side hole plug device of layering well interval injection well downhole flow regulator fluid hole, and its value equals the pressure of injection well downhole flow regulator place oil sets annular space); Synchronization on flow, pressure curve is chosen sample value, with each water injection pressure chosen poor (stream presses IN-stream to press OUT) and respective streams value; Foundation is ordinate with the water flooding pressure differences, with corresponding flow with it be abscissa concern template (as shown in Figure 1), this concerns that template can be the template that concerns of the different water nozzle sizes of a series of different injection intervals.Every line in the accompanying drawing 1 is represented a kind of water injection pressure difference of water nozzle size and the relation of flow.
Embodiment: to towards 33 wells, this well has three water filling intervals, and at first inclined to one side one, inclined to one side two to this well, inclined to one side three intervals are set up flow, poor, the water nozzle size relationship masterplate of water injection pressure.
Three measuring appliances are all loaded onto the water nozzle of 12mm, throw on three injection well downhole flow regulators in down-hole, change water injection pressure on ground gradually, flow, the difference between reservoir pre ssure and injection pressure of noting by three measuring appliances set up the relation curve of 12mm water nozzle size class; Again the water nozzle in three measuring appliances is replaced with 6.6mm, 4.4mm, 3.6mm, 2.8mm, 2.2mm, 1.8mm according to this, throw into according to this on the injection well downhole flow regulator of corresponding interval, change water injection pressure respectively on ground, flow, the difference between reservoir pre ssure and injection pressure of noting respectively by three measuring appliances set up the relation curve under the water nozzle size class separately; Make relation curve under other water nozzle size class by interpolation method again, form three flows, poor, the water nozzle size relationship masterplate of water injection pressure at last.
Through this well is carried out flow, pressure test.Look into again that geological scheme is inclined to one side one, inclined to one side two, inclined to one side 33 intervals injection allocation 10m respectively
3/ d, 5m
3/ d, 5m
3/ d, the water injection pressure differences inclined to one side, inclined to one side two, inclined to one side 33 intervals that record under normal water injection pressure are respectively 1.83Mpa, 0.03Mpa, 0.01Mpa, and injection rate is respectively 16m
3/ d, 0m
3/ d, 0m
3/ d, this explanation is inclined to one side-super injection allocation 6m at this moment
3/ d, inclined to one side two, inclined to one side three is all intact not to become injection allocation.Set up that flow, water injection pressure are poor, water nozzle inclined to one side a during water nozzle size relationship masterplate, inclined to one side two, that inclined to one side 33 intervals are finished injection allocation just is respectively 4.2mm, 6.2mm, 5.8mm.Flow, water injection pressure at an inclined to one side interval that forms is poor, be the straight line of standardized the parallel transverse axis of point of 1.83Mpa on the water nozzle size relationship masterplate in pressure differential, be 10m at flow
3The straight line of standardized the parallel longitudinal axes of point of/d, two straight lines intersect, and see hithermost that water nozzle line of intersection point, check in intersection point on 3.8mm water nozzle line, so the water nozzle that an inclined to one side interval should be thrown is 3.8mm; , inclined to one side three two interval water nozzles inclined to one side two with checking in quadrat method are respectively 12mm, 12mm.Three water nozzles are contained in measuring appliance respectively throw on corresponding injection well downhole flow regulator, worked 30 days, take out instrument respectively after, 12m was annotated in inclined to one side flow monitoring in average day
3Accumulative total water filling 357m
3Average water injection pressure difference 1.81Mpa.Annotated 2m in inclined to one side two average days
3, accumulative total water filling 59m
3Annotated 0m in inclined to one side three average days
3, accumulative total water filling 0m
3
Again an inclined to one side interval is lowered to dead mouth later on, has carried out pressure buildup test inclined to one side one.Take out after 15 days, pressure is by the 18.11Mpa 17.94Mpa that descends.
Claims (1)
1, a kind of layering injection rate and zonal pressure are exempted from the test storage direct-read method, it is characterized in that:
A. on flow, pressure storage measuring appliance, add water nozzle, throw on the injection well downhole flow regulator in the water filling layer;
B. continuously change water injection pressure on ground, utilize flow transmitter and two pressure sensors to write down flow, the stream of each interval in water absorption course and press IN and stream to press the OUT value, set up flow, pressure curve with the method for synchronization;
C. the synchronization on flow, pressure curve is chosen sample value, and promptly flowing pressure IN with each water injection pressure difference of choosing is coordinate with the difference and the respective streams value that flow pressure OUT;
D. setting up with the water flooding pressure differences is ordinate, is the relation curve of abscissa with corresponding flow with it;
E. change different water nozzles and repeat aforesaid operations, the size of water nozzle is from 12mm～1.8mm, obtain and the corresponding different curve of water nozzle size, it is ordinate that described all curve plottings are promptly obtained with the water flooding pressure differences, is the template that concerns of abscissa with corresponding flow with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156697 CN1261669C (en) | 2002-12-19 | 2002-12-19 | Layering injection amount and layering pressure test-free storage direct-reading method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156697 CN1261669C (en) | 2002-12-19 | 2002-12-19 | Layering injection amount and layering pressure test-free storage direct-reading method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508388A CN1508388A (en) | 2004-06-30 |
| CN1261669C true CN1261669C (en) | 2006-06-28 |
Family
ID=34236352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02156697 Expired - Fee Related CN1261669C (en) | 2002-12-19 | 2002-12-19 | Layering injection amount and layering pressure test-free storage direct-reading method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261669C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469607B (en) * | 2007-12-24 | 2012-07-04 | 中国石油大港油田第五采油厂 | Water injection technological process using three parameters test curve for layered pulling and running for water injection allocation |
| CN102839953B (en) * | 2011-06-24 | 2015-08-05 | 中国石油化工股份有限公司 | A kind of pressure test controls the method injecting flow |
| CN109630093A (en) * | 2019-01-21 | 2019-04-16 | 中国石油天然气集团有限公司 | A kind of flow rate test method in oil reservoir logging |
-
2002
- 2002-12-19 CN CN 02156697 patent/CN1261669C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1508388A (en) | 2004-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11054405B2 (en) | Testing device and method for simulating the flowback in the shut-in period of fractured wells | |
| CA2657996C (en) | Method for comparing and back allocating production | |
| CN109522634B (en) | Numerical analysis method for compact gas multistage volume fracturing horizontal well | |
| CN102953726B (en) | Method and device for water drive oilfield advantage channel recognition | |
| CN202735333U (en) | Fractured rock mass seepage and stress and deformation coupling in-situ test device | |
| CN105628894A (en) | Simulation and evaluation system for low-salinity water injection experiment and method | |
| CN101135734A (en) | Foundation ground water parameter measurement method and system based on pressure tracing | |
| CN103334739A (en) | Method and device for determining gas pressure of coal seam | |
| CN104975828B (en) | Device and preparation method that achievable mixed phase selection of additives and rock core mixed phase drive | |
| CN109555515A (en) | Formation collapsed pressure determines method and apparatus | |
| CN111189507B (en) | Karst water stratification discrimination and underground water level observation method | |
| CN1261669C (en) | Layering injection amount and layering pressure test-free storage direct-reading method | |
| CN104215405A (en) | Seal checking method and seal checking tool for packer of layered water injection well | |
| CN107725035B (en) | Pressure monitoring method for judging water incoming direction of non-uniform liquid production horizontal well | |
| CN105569623B (en) | Well head combined measuring device and its method for water injection well | |
| CN202039840U (en) | Working fluid level device for oil well annular gas injection test | |
| CN111950111B (en) | Dynamic analysis method suitable for open-bottom carbonate reservoir | |
| CN112593918A (en) | Gas reservoir water control simulation experiment device and method | |
| CN105909240A (en) | Bottom hole pressure testing, polymer displacement front edge position monitoring and reservoir assessment method | |
| CN109343133A (en) | Extension diameter section porosity correction method based on two-dimensional NMR Logging technology | |
| CN205941291U (en) | Water mechanism is led to in pressurization suitable for two dimension rock sample displacement seepage tests | |
| Engler et al. | Analysis of pressure and pressure derivative without type-curve matching, 6. Horizontal well tests in anisotropic media | |
| Bringedal et al. | Application of Virtual Flow Metering as a Backup or Alternative to Multiphase Flow Measuring Devices | |
| CN113464123A (en) | Rapid water finding method and tubular column for coiled tubing of high-pressure water outlet horizontal well | |
| CA2650081A1 (en) | Simultaneous analysis of two data sets from a formation test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 Termination date: 20101219 |