CN105756669A - Isotope labeling test method for water outlet part of high-water-cut horizontal well - Google Patents
Isotope labeling test method for water outlet part of high-water-cut horizontal well Download PDFInfo
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- CN105756669A CN105756669A CN201610091869.0A CN201610091869A CN105756669A CN 105756669 A CN105756669 A CN 105756669A CN 201610091869 A CN201610091869 A CN 201610091869A CN 105756669 A CN105756669 A CN 105756669A
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- 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
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
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Abstract
The invention provides an isotope labeling test method for a water outlet part of a high-water-cut horizontal well.The method sequentially comprises the steps that 1, isotopes in an isotope releasing device are solidified in a water-soluble carrier; 2, the isotope releasing device and an oil pipe are connected and delivered downwards to a horizontal section of the well; 3, the carrier dissolves and releases the isotopes in downhole water, and the isotope releasing speed has a certain proportion relationship with the water body flow velocity; 4, an oil production pump is started, and a production test starts; 5, gamma spectrum analysis is continuously performed on produced water on the ground, and the water outlet part of the high-water-cut horizontal well is inverted through the variety and characteristic content of the detected isotopes.According to the method, due to the fact that the isotope releasing device is delivered by adopting the oil pipe, various well track and well shaft condition limitations can be overcome, and the operation risk is reduced; the method can be achieved during pump inspection operation without needing cooperation of tools such as a packer, a bridge plug and an underground switch, the platform occupation time can be shortened, and therefore the well logging cost is saved.
Description
Technical field
The invention belongs to oil well logging device technique field, be specifically related to a kind of High water cut horizontal well outlet part Bit Parity element labeled test method.
Background technology
Water outlet topical diagnosis accurately (in the industry also referred to as water detection test) is basis and the key of High water cut horizontal well water and oil control, is also the hard nut to crack that domestic and international horizontal well produces and management is central.Present stage can only rely on external " down-hole crawl device+holdup instrument+multiparameter instrument " cable test.But find by applying, the method there is also under in horizontal well complex drilling track do not go, cannot get through in complicated pit shaft, testing expense high, domestic corporation is difficult to sizable application and the scope of application does not extensively wait deficiency；In addition difficulty of construction is big, operating risk is high, causes that the water problems that of a large amount of High water cut horizontal well can not get solving for a long time, is forced to produce in spite of illness, even stops well and discard, and economic loss is abnormal serious.
Summary of the invention
For the enforcement difficulty that overcomes in prior art in High water cut horizontal well outlet part bit test deficiency greatly, costly, the present invention provides a kind of High water cut horizontal well outlet part Bit Parity element labeled test method.
The High water cut horizontal well outlet part Bit Parity element labeled test method of the present invention, in turn includes the following steps:
A, the isotope discharged in device by isotope are solidificated in water-solubility carrier；
B, isotope is discharged device it is connected with oil pipe and down to the horizontal segment of well；
C, water-solubility carrier dissolve release isotope, isotope rate of release and water volume flow rate proportion relation in the water of down-hole horizontal section；
D, discharging after device gone into the well at isotope, termination of pumping after hydrops and Carryover effect in 6-12 hour eliminating well is taken out in examination, opens the isotope release device of down-hole, restarts oil extraction pump, start production test；
E, it is performed continuously over gamma spectrum analysis on ground in the face of recovered water, passes through seized isotopic kind and feature content analyzes the water outlet position of High water cut horizontal well.
The described isotope in step a is Ru, Sr, Ta.
The described water-solubility carrier in step a is NaCl.
Isotope release device in described step a includes union joint, mouth collected by loudspeaker, water inlet flows to groove, carrier mounting groove, carrier discharge chamber, go out current direction groove；Its annexation is, described carrier mounting groove two ends are connected by screw thread and union joint are fixing, being fixedly installed the water inlet that ring-type communicates with carrier mounting groove outside the annular barrel that union joint is constituted successively to flow to groove, carrier release chamber, go out current direction groove, described water inlet flows to the import department of groove and is provided with loudspeaker and collects mouth.Described union joint, carrier mounting groove, water inlet flows to groove, carrier release chamber, goes out current direction groove is that concentric is arranged.
The carrier mounting groove two ends of the isotope release device in the step a in the present invention are connected with union joint by screw thread, current are collected mouth by loudspeaker and are collected, flow to groove to release chamber through water inlet, wash away carrier, and be discharged into the horizontal segment outside oil pipe having dissolved isotopic solution through going out current direction groove.
The method of the present invention is based on the flow performance of High water cut horizontal well and tests, in various situations such as horizontal wells " water outlet of single position, multiple location mixing water outlet ", downstream in multiple product sections, isotope release device is laid by oil pipe, and make output water flow by the consistent direction on " annular space-shaft bottom-oil pipe-ground ", adopt gamma detector and the spectrometer isotopic species entrained by ground detection recovered water and feature content, catch the flow performance of High water cut horizontal well and analyze water outlet position.
Isotope (A), (B), (C) are solidificated in water-solubility carrier.
Carry isotopic carrier and can dissolve release isotope (A), (B), (C), rate of release and water volume flow rate proportion relation respectively in water.
Carrier is arranged in isotope release device, when device enters well, and the two ends connected pipes of isotope release device, isotope release device can be opened by pressure mode of spraining.
Adopting tubing transmission mode, enter several isotope release device under in horizontal well, cloth is placed on the downstream of multiple product section respectively.
Device adopts oil pipe to couple oil extraction pump, set pressure valve, packer, isotope release device and horizontal well ball seat.Device end is down to shaft bottom, when test, makes oil reservoir output water by the consistent direction flowing on " the outer annular space-shaft bottom-oil pipe-ground of oil pipe ".
The invention has the beneficial effects as follows:
1. the present invention is arranged on oil pipe owing to isotope discharges device, the rigidity of oil pipe can be relied on to transmit and push, the lifting force less than 60 tons can be applied.Thus limiting easily against various well tracks and wellbore conditions.Meanwhile, it is hampered and is easier to accident treatment.
2. the isotope solid encapsulation adopted in the present invention enters carrier, carrier and discharges the means such as isotope with water body flow, makes the present invention not need cable power supply and signal is uploaded, broken away from the restriction suffered by cable test.
3. the present invention adopts γ spectrum unscrambling to analyze the isotopic species in recovered water and feature content, relative to conventional chemical detection method, there is sustainable detection, without manual sampling, certainty of measurement high.
4. relative to cable test, the present invention can complete when horizontal well pump detection and workover, logging equipment and log-time be need not individually arrange, it is possible to decrease the platform holding time in marine oil field is tested, and rountrip and the control water measure time of more than 1 time saved.
5. relative to mechanical test method, the present invention tests owing to have employed the flow performance to oil well, do not need the cooperation of the instruments such as packer, bridging plug, down-hole switch, the platform holding time that simplify construction procedure, can reduce in marine oil field test application and construction risk, and save rountrip and the control water measure time of more than 1 time.
6. relative to cable test, the present invention can connect the various oil production equipment in oil field, non-water spraying horizontal well is implemented with pump production test, it is not necessary to drainage with liquid nitrogen equipment coordinates.
7. the present invention tests owing to have employed the flow performance to oil well, may be applied not only to horizontal well, it is possible to be applied to straight well.
Accompanying drawing explanation
Fig. 1 is the downhole hardware connection diagram in the High water cut horizontal well outlet part Bit Parity element labeled test method of the present invention；
Fig. 2 is the isotope release apparatus structure schematic diagram in the present invention；
In figure: 1. oil extraction pump 2. overlap pressure valve 3. packer 4. isotope release device 5. water-solubility carrier A6. water-solubility carrier B7. water-solubility carrier C8. horizontal well ball seat 9. oil pipe 10. union joint 11. loudspeaker collect mouth 12. water inlet flow to groove 13. carrier mounting groove 14. carrier release chamber 15. go out current direction groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail
Embodiment 1:
Fig. 1 is the downhole hardware connection diagram in the High water cut horizontal well outlet part Bit Parity element labeled test method of the present invention, and Fig. 2 is the isotope release apparatus structure schematic diagram in the present invention.In Fig. 1, Fig. 2, in conjunction with test case, the test process of the present invention is illustrated.But, those skilled in the art are it should also be understood that the invention is not restricted to listed detailed description of the invention, as long as meeting the spirit of the present invention, all should be included in protection scope of the present invention.
The test process of the present invention includes: test device assembles, enters under tubing transmission, three processes of production test.
Test device assembles: the water-solubility carrier A5 containing isotope A, the water-solubility carrier B6 containing isotope B, the water-solubility carrier C7 containing isotope C are separately mounted in isotope release device.
Enter under tubing transmission: by order of going into the well, be sequentially connected with horizontal well ball seat 8, isotope release device 4, packer 3, set pressure valve 2, oil extraction pump 1 with oil pipe 9, adopt oil pipe 9 transmission means G.I.H, as shown in Figure 1.
Production test: base sealed packer 3, oil extraction pump 1 examination is taken out 6-12 hour, gets rid of termination of pumping after hydrops and Carryover effect in well.Sleeve pipe is suppressed and is opened isotope release device 4, and oil extraction pump 1 starts to go into operation, and well head recovered water enters the station after carrying out gamma spectrum analysis.According to the isotopic species seized and feature content, Bound moisture horizontal well geologic data carries out the diagnosis at water outlet position.
Isotope release device in the present invention includes union joint 10, mouth 11 collected by loudspeaker, water inlet flows to groove 12, carrier mounting groove 13, carrier discharge chamber 14, go out current direction groove 15, its annexation is: described carrier mounting groove 13 two ends are connected by screw thread is fixing with union joint 10, being fixedly installed the water inlet that ring-type communicates with carrier mounting groove 13 outside the annular barrel that union joint 10 is constituted successively to flow to groove 12, carrier release chamber 14, go out current direction groove 15, described water inlet flows to the import department of groove 12 and is provided with loudspeaker and collects mouth 11；Described union joint 10, carrier mounting groove 13, water inlet flow to groove 12, carrier release chamber 14, go out current direction groove 15 for concentric setting.Current are collected mouth by loudspeaker and are collected, and flow to groove to release chamber through water inlet, wash away carrier, and be discharged into the horizontal segment outside oil pipe having dissolved isotopic solution through going out current direction groove.
In the present embodiment, being provided with three identical isotope release devices of structure altogether, isotope release device 4 is one of them.Three isotope release devices are respectively mounted the water-solubility carrier A5 containing isotope A, the water-solubility carrier B6 containing isotope B, the water-solubility carrier C7 containing isotope C, isotope A, B, C respectively Ru, Sr, the Ta in above three water-solubility carrier.
In conjunction with the example of the single product section water outlet of High water cut horizontal well, the test philosophy of the method is illustrated.
High water cut horizontal well go out water problems, be oil reservoir under the combined effect of natural factor and artifact, cause displacement of reservoir oil water body in horizontal segment certain produce section occur in that breakthrough.Thus other product sections are created strong interference, causing horizontal well to produce acutely downslide High water cut and crude output occur even for zero, namely a large amount of recovered water of section is produced in the local of horizontal segment, and other product sections are few without output or output.
By the method for the present invention, lay isotope release device, the then flow performance of this High water cut horizontal well in the downstream of multiple product sections, can by the isotopic species in recovered water and feature content be caught and analyze.
Such as, at toe water outlet, heel and middle part without output situation.The downstream producing section along the heel of horizontal segment, middle part and toe three lays three isotope release devices 4.Because section is produced without output in heel and middle part, isotope A, B of dissolving release at heel and middle part because of not flowing, and will cannot be carried to ground.γ detection will will detect that isotope C and its feature content, and isotope A, B will can't detect, and thus can compare geologic data according to testing result can diagnose water outlet position.
At middle part water outlet, heel and toe without output situation.Heel dissolves the isotope A of release because of not flowing, and will cannot be carried to ground.And the output water at middle part is in the flow process on " the outer annular space-shaft bottom-oil pipe-ground of oil pipe ", dissolve except carrying middle part except the isotope B of release, also will carry the isotope C of toe dissolving release.Due to the isotope rate of release of carrier is proportional to flow velocity and output water from middle part to the flowing of toe be same flow velocity.γ detection on ground will will detect that isotope B, C and approximately uniform feature content, and isotope A will can't detect, and thus can compare geologic data according to testing result and water outlet position is diagnosed.
When heel water outlet, middle part and toe are without output situation.The output water of heel, along the flow process on " the outer annular space-shaft bottom-oil pipe-ground of oil pipe ", dissolves except the isotope A of release except carrying heel, also will carry isotope B, C of middle part, toe dissolving release.Discharge that isotopic speed is proportional to flow velocity due to carrier and output water is same flow velocity from " heel-middle part--toe ", γ detection will will detect that isotope A, B, C and approximately uniform feature content, thus can compare geologic data according to testing result and water outlet position is diagnosed.
In conjunction with the example of multiple product section water outlets of High water cut horizontal well, the test philosophy of the method is described further.
At middle part and toe water outlet, heel without the situation of output.Middle part and the output water of the toe flow process along " the outer annular space-shaft bottom-oil pipe-ground of oil pipe ", the adduction of middle part and toe water yield within the unit interval, will result in toe flow velocity more than middle part flow velocity, γ detection on ground will will detect that isotope B, C and both feature content differences, and the feature content of isotope C can feature content more than isotope B.Thus can compare geologic data according to testing result water outlet position is diagnosed.
During downhole hardware in the High water cut horizontal well outlet part Bit Parity element labeled test method of the present invention connects, the quantity of the isotope release device of down-hole can be determined according to the quantity of down-hole horizontal section oil reservoir, and places different isotopes in water-solubility carrier.
High water cut horizontal well in the present invention is the oil well that water yield reaches 85%.
Claims (1)
1. a High water cut horizontal well outlet part Bit Parity element labeled test method, it is characterised in that: described method in turn includes the following steps:
A, the isotope discharged in device by isotope are solidificated in water-solubility carrier；
B, isotope discharges device being connected with oil pipe and down to the horizontal segment of well, wherein, enter several isotope release device under in horizontal well, cloth is placed on the downstream of multiple product section respectively, and the isotopic species that each isotope release device contains is different；
C, water-solubility carrier dissolve release isotope, isotope rate of release and water volume flow rate proportion relation in the water of shaft bottom；
D, discharging after device gone into the well at isotope, termination of pumping after hydrops and Carryover effect in 6-12 hour eliminating well is taken out in examination, pressurizes 5MPa from Christmas tree casing, opens the isotope release device of down-hole, start oil extraction pump, start production test；
E, it is performed continuously over gamma spectrum analysis on ground in the face of recovered water, passes through seized isotopic kind and feature content analyzes the water outlet position of High water cut horizontal well；
The described isotope in step a is Ru, Sr, Ta；
The described water-solubility carrier in step a is NaCl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610091869.0A CN105756669B (en) | 2013-12-13 | 2013-12-13 | High water cut horizontal well outlet part Bit Parity element labeled test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310675243.0A CN103643942B (en) | 2013-12-13 | 2013-12-13 | High water cut horizontal well outlet part Bit Parity element labeled test method |
| CN201610091869.0A CN105756669B (en) | 2013-12-13 | 2013-12-13 | High water cut horizontal well outlet part Bit Parity element labeled test method |
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| CN201310675243.0A Division CN103643942B (en) | 2013-12-13 | 2013-12-13 | High water cut horizontal well outlet part Bit Parity element labeled test method |
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| CN105756669A true CN105756669A (en) | 2016-07-13 |
| CN105756669B CN105756669B (en) | 2019-06-18 |
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| CN201610091869.0A Expired - Fee Related CN105756669B (en) | 2013-12-13 | 2013-12-13 | High water cut horizontal well outlet part Bit Parity element labeled test method |
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Patent Citations (7)
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| US4051368A (en) * | 1976-06-21 | 1977-09-27 | Texaco Inc. | Method of measuring horizontal flow speed of fluids in earth formations penetrated by a wellborehole |
| CN1081491A (en) * | 1992-07-15 | 1994-02-02 | 中国核动力研究设计院 | A kind of survey of wells by radioactive isotope tracking method |
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| WO2013106205A1 (en) * | 2012-01-10 | 2013-07-18 | Conocophillips Company | Heavy oil production with em preheat and gas injection |
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Granted publication date: 20190618 Termination date: 20191213 |