CN1360213A - Tracing technique for detecting micro substance between wells in oil field - Google Patents
Tracing technique for detecting micro substance between wells in oil field Download PDFInfo
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- CN1360213A CN1360213A CN 01138834 CN01138834A CN1360213A CN 1360213 A CN1360213 A CN 1360213A CN 01138834 CN01138834 CN 01138834 CN 01138834 A CN01138834 A CN 01138834A CN 1360213 A CN1360213 A CN 1360213A
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- 239000000126 substance Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000000700 radioactive tracer Substances 0.000 claims description 42
- 239000003921 oil Substances 0.000 claims description 22
- 238000004458 analytical method Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 230000004304 visual acuity Effects 0.000 claims description 4
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000013508 migration Methods 0.000 claims description 3
- 230000005012 migration Effects 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 241001269238 Data Species 0.000 claims description 2
- 239000010779 crude oil Substances 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002332 oil field water Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- HEVGGTGPGPKZHF-UHFFFAOYSA-N Epilaurene Natural products CC1C(=C)CCC1(C)C1=CC=C(C)C=C1 HEVGGTGPGPKZHF-UHFFFAOYSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
A micro substance tracing detection technique between wells in oil field is characterized by that the micro substance in the strata water and water-source water in oil field is used as tracing agent, and a tracing agent explaining software is used to process the test result of sample, obtaining dynamic parameters. Its advantages are high feasibility, adaptability and resolution, low cost and stable performance.
Description
The present invention relates to a kind of measuring technology that oilfield development process measures formation fluids, displacement state information that is used for.
In oilfield development process, for in time, analyze exactly, grasp by the displacement of various fluids such as oil, gas, water in the exploitation oil reservoir, migration situation and dynamic, so that take to develop the adjustment scheme accordingly and measure improves development effectiveness, the spike measuring technology is monitored relevant oil, gas, well between needs employing well, the admission related data.Since over half a century, the spike measuring technology has experienced the development course of chemical tracer-radioisotope tracer-non radioactive isotope tracer agent between the well of domestic and international oil field.Wherein, the first generation chemical tracers such as inorganic salts, dyestuff, halogenated hydrocarbons and alcohols that adopt the fifties need the mining site operation, and consumption is big, the cost height, adaptability and alternative poor, measuring resolution is low, and the part tracer agent brings influence to well logging, well logging interpretation and back processing, and drawbacks such as environment and personal security problem are arranged, be superseded gesture gradually; Though seventies research, what use is that the second generation radioisotope tracer of representative has few, the easy to detect and detection resolution of consumption than advantages such as height with tritium and tritide, but owing to have radioactivity, unfavorable to personnel, Environmental security, its application is restricted; The research eighties, the third generation tracer agent of using are representative with deuterium and compound thereof, advantage is same as the second generation, and the environment and the safety problem of mining site input oil-water well, sampling, management etc. have been overcome, but because non radioactive isotope tracer agent kind still less, only be not to be allowed to condition at mining site in use to demonstrate radioactivity, still need activate after the sampling by indoor atomic pile, measure its radioactivity with neutron activation method, and can only carry out indoor detecting operation by International Atomic Energy Agency, and analytical test is numerous and diverse, the expense costliness makes its application limited.
The object of the present invention is to provide a kind of both easy to detectly, the detection resolution height can obtain oil reservoir and annotate sampled-current body multidate information, and tracing technique for detecting micro substance between wells in oil field expensive less, that personnel's environment do not had injury.
Measuring technology provided by the invention is to realize like this.This kind measuring technology is to carry out on the basis of background concentration high resolving power total analysis at local water and source water to monitored oil field or oil well, find out wherein do not have or very one or more (on oil well single or multi-section multi-layer decide) high purity elements of trace as tracer material, it is processed into liquid, gas or the pressed powder synchronous with tracked fluid, press the reservoir condition design quantity, add or the mining site injection from well head; Then, by observing well wellhead sampling and sample preparation, purification, on high resolving power test equipment,, and utilize the tracer agent interpretation software that the sample detection result is handled, obtain dynamic parameter tracked tracer agent high speed detection simultaneously; At last, dynamically tracer agent analysis result and software processes result are carried out analysis interpretation, the client is provided required various dynamic datas in conjunction with on-the-spot oil-water well production.The implementation step of this measuring technology is as follows:
1, formulates the test implementation scheme, select, inject well, monitor well pound sign, test purpose, essential implementation, scheduling etc. comprising block, well group, zone of interest;
2, oil-field water is carried out total analysis, determine to select behind the background concentration one or more wherein not have or very the material of trace as tracer agent;
3, calculate definite tracer agent consumption.According to the data such as well spacing, reservoir thickness, factor of porosity, water percentage, percent continuity and instrument lowest detectable limit of well group, follow these steps to and formula calculates the micro substance tracer agent consumption (being generally several hectograms that restrain) of use:
At first, calculate the maximum dilution volume that injects the stratum:
Vp＝πr
2·h·φ·Sw·Er
In the formula:
Vp-maximum dilution volume, m
3
The distance of r-injection well and sampled well, m;
H-injection well net thickness, m;
Sw-layer of sand water saturation, %;
Er-percent continuity, %;
φ--factor of porosity, %;
Secondly, calculate the dosage of tracer agent:
A＝μ·MDL·Vp
In the formula:
A-tracer agent consumption, gram;
μ-guarantee coefficient;
MDL-instrument lowest detectable limit;
4, inject well by design quantity to tracer agent and add and anticipate tracer agent aqueous solution or the complex solution for preparing, dosing method can adopt the well head specific purpose tool directly to add or adopt waterflood-transmission line to inject at well head;
5, take a sample at monitor well by the sampling system and the requirement of embodiment regulation;
6, utilize resolution can reach ppq level (1 * 10
-15) inductively coupled plasma mass spectrometry instrument (ICP-MS) sample is in time analyzed, and draw the tracer agent production curve;
7, utilize the tracer agent interpretation software that the tracer agent production curve is carried out match, obtain formation parameter distribution situation and actual fluid-channeling channel parameter;
8, according to the formation parameter distribution situation, analyze to inject fluid level channelling situation, by to seeing that tracer agent time, well spacing calculate, obtain channelling direction and speed;
9,, obtain the vertical actual channelling situation of fluid in conjunction with profile-log of water injection or notes vapour well steam entry profile according to actual fluid-channeling channel parameter;
10, utilize above-mentioned match explanation results, analyze main flow, main passage channelling parameter and the connection situation of oozing;
11, according to the geologic model of setting up,, calculate relevant coefficient of heterogeneity (Lorenz constant, V-factor etc.), carry out the situation analysis of oil reservoir heterogeneous body according to conventional oil reservoir heterogeneous body evaluation method;
12, utilize explanation of crude oil or viscous crude migration rule simulation softward and tracer agent numerical simulation software, relevant dynamic and static and production logging data to make an explanation, obtain the remaining oil saturation distribution situation.
Oil field provided by the present invention micro substance well-to-well tracer test technology in recent years in China Liaohe River, North China, long celebrating oil field carried out tentative enforcement and application, and accomplishes the end in view respectively, obtained good result.For example, well group S1+2 oil reservoir to the cold 43 45-164 well groups in Liaohe Oil Field and two exploitation via steam injection viscous crude of 43-164 well group has added 120 grams and 3.5 gram tracer agents at 45-164 well and 43-164 well respectively by above-mentioned implementation step, and test, obtained following achievement:
(1) determined that vapour scurries well steam propulsion speed;
(2) determined vapour scurry direction and streamline and up and down between series of strata vapour scurry situation;
(3) determined that notes vapour involves scope and parameter (area coefficient, volume factor and sweep efficiency);
(4) by numerical simulation, the pressure field of monitoring and calculate well group when annotating tracer breakthrough distributes;
(5) to handling up well and observe between the well vapour on every side and scurry the crack situation and analyze;
(6) reservoir heterogeneity (Lauren magnetic constant, V-factor) is described;
(7) determined oil reservoir group and the quantity that vapour is scurried, stifled vapour or profile control scheme thinking are provided;
(8) determined remaining oil saturation and distribution situation thereof between test well group well.
Measuring technology provided by the invention is easy to implement, easy to detect, tracer agent has that expense is low, wide in variety, adaptability is strong, consumption is few, detection resolution is high, can differentiate single plant and multiple tracer agent, mining site add characteristics such as convenient, no personal safety and environmental problem and stable performance, high-low temperature resistant simultaneously between the well that is adopted, have a extensive future, to monitoring and instructing oil-field development that the important practical meaning is arranged.
Claims (1)
1, a kind of tracing technique for detecting micro substance between wells in oil field, it is characterized in that, this technology be: local water and source water to monitored oil field or oil well carry out on the basis of background concentration high resolving power total analysis, find out wherein do not have or very the trace one or more high purity elements as tracer material, it is processed into liquid, gas or the pressed powder synchronous with tracked fluid, press the reservoir condition design quantity, add or the mining site injection from well head; Then, by observing well wellhead sampling and sample preparation, purification, on high resolving power test equipment,, and utilize the tracer agent interpretation software that the sample detection result is handled, obtain dynamic parameter tracked tracer agent high speed detection simultaneously; At last, dynamically tracer agent analysis result and software processes result are carried out analysis interpretation, the client is provided required various dynamic datas in conjunction with on-the-spot oil-water well production; The implementation step of this measuring technology is as follows:
(1) well, monitor well pound sign, test purpose, essential implementation, scheduling etc. are selected, injected to location survey examination embodiment comprising block, well group, zone of interest;
(2) oil-field water is carried out total analysis, determine to select one or more micro substances as tracer agent behind the background concentration;
(3) calculate to determine the tracer agent consumption,, follow these steps to and formula calculates the micro substance tracer agent consumption of use according to the data such as well spacing, reservoir thickness, factor of porosity, water percentage, percent continuity and instrument lowest detectable limit of well group:
At first, calculate the maximum dilution volume that injects the stratum: Vp=π r
2In the h φ SwEr formula: Vp-maximum dilution volume, n
3The distance of r-injection well and sampled well, m; H-injection well net thickness, m; Sw-layer of sand water saturation, %; Er-percent continuity, %; φ--factor of porosity, %;
Secondly, calculate the dosage of tracer agent:
A＝μ·MDL·Vp
In the formula:
B-tracer agent consumption, gram;
μ-guarantee coefficient;
MDL-instrument lowest detectable limit
(4) anticipate the tracer agent for preparing by adding to tracer agent injection well by design quantity, dosing method can adopt the well head specific purpose tool directly to add or adopt waterflood-transmission line to inject at well head;
(5) take a sample at monitor well by the sampling system and the requirement of embodiment regulation;
(6) the inductively coupled plasma mass spectrometry instrument that utilizes resolution can reach the ppq level is in time analyzed sample, and draws the tracer agent production curve;
(7) utilize the tracer agent interpretation software that the tracer agent production curve is carried out match, obtain formation parameter distribution situation and actual fluid-channeling channel parameter;
(8) according to the formation parameter distribution situation, analyze to inject fluid level channelling situation, by to seeing that tracer agent time, well spacing calculate, obtain channelling direction and speed;
(9), obtain the vertical actual channelling situation of fluid in conjunction with profile-log of water injection or notes vapour well steam entry profile according to actual fluid-channeling channel parameter;
(10) utilize above-mentioned match explanation results, analyze main flow, main passage channelling parameter and the connection situation of oozing;
(11) according to the geologic model of setting up,, calculate relevant coefficient of heterogeneity, carry out the situation analysis of oil reservoir heterogeneous body according to conventional oil reservoir heterogeneous body evaluation method;
(12) utilize explanation of crude oil or viscous crude migration rule simulation softward and tracer agent numerical simulation software, relevant dynamic and static and production logging data to make an explanation, obtain the remaining oil saturation distribution situation.
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|---|---|---|---|
| CNB01138834XA CN1166964C (en) | 2001-12-13 | 2001-12-13 | Tracing technique for detecting micro substance between wells in oil field |
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|---|---|---|---|
| CNB01138834XA CN1166964C (en) | 2001-12-13 | 2001-12-13 | Tracing technique for detecting micro substance between wells in oil field |
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| CN1166964C CN1166964C (en) | 2004-09-15 |
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| CN1325942C (en) * | 2002-08-23 | 2007-07-11 | 中国原子能科学研究院 | Perturbation well-to-well tracing test method |
| GB2438216A (en) * | 2006-05-17 | 2007-11-21 | Schlumberger Holdings | Methods and systems for evaluation of hydrocarbon reservoirs and associated fluids using biological tags and real-time polymerase chain reaction |
| CN100489266C (en) * | 2005-07-07 | 2009-05-20 | 中国石油大学(北京) | Method for detecting fluid-channeling channel of oil field |
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