CN104265259A - Capacity tracking and evaluating method - Google Patents

Capacity tracking and evaluating method Download PDF

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Publication number
CN104265259A
CN104265259A CN201410385693.0A CN201410385693A CN104265259A CN 104265259 A CN104265259 A CN 104265259A CN 201410385693 A CN201410385693 A CN 201410385693A CN 104265259 A CN104265259 A CN 104265259A
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China
Prior art keywords
indicator solution
well
sample
fracturing
oil
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Pending
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CN201410385693.0A
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Chinese (zh)
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员增荣
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Individual
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Priority to CN201410385693.0A priority Critical patent/CN104265259A/en
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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • 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
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells

Abstract

A capacity tracking and evaluating method is a technology for monitoring the layered (sectioned) fracturing transformation effect of an oil and gas well. The working principle of the monitoring technology is that during the layered (sectioned) fracturing process of the oil and gas well in the oil and gas field, liquid indicators (that is, YTJ-series indicators) with different characteristics are selected for different reservoirs and a fracturing fluid enter into or exit from an oil reservoir, and during the process of blowing off after fracturing, liquids flowing back to the oil and gas well are continuously taken and accurately metered, the outputs of the indicators in the flow-back liquids are separated, analyzed, detected and processed by related detection instruments of the YTJ-series liquid indicators to obtain the output conditions of the indicators on each layer (section) after the oil and gas well is subjected to fractured transformation and obtain the related geological information of fracturing effects, such as the output capacity (contribution rate) and the liquid-producing capacity constitution condition of each layer (section) after a fractured well is fractured.

Description

Production capacity is followed the tracks of and evaluation method
Technical field: the monitoring technology that the present invention relates to oil gas water well layering (section) fracturing reform effect, especially production capacity are followed the tracks of and evaluation method.
Background technology: at present formulation experiment instrument to be lowered in well by cable or coiled tubing and to monitor by conventional gas and oil well capacity condition monitoring, although the method is simple, but it is interior necessary unblocked that its weak point is the well of requirement monitor well, any downhole tool (packer, bridging plug, casing deformation etc.) can not be had, otherwise cannot monitor or cause down-hole accident to cause monitor well to scrap, particularly with layering (section) pressure break of long string downhole tool, the post-fracturing formulation experiment of oil gas water well, it is helpless that conventional downhole probe detects.And the fracturing technique of layering (section) is at present very general, no matter be in fracturing fluid system, or in proppant system, fracturing technology measure, fracturing string etc., formed the process system of the science of complete set, its workload is increased sharply year by year, but the monitoring method of corresponding layering (section) fracturing effect relatively lags behind with it.Due to the particularity of execution conditions, for the correctional effect of layering (section), the understanding of each layer (section) contribution and evaluation after the monitoring of unconventional, layering (section) fractured well and measure, that is to layering, multistage fractured well pressure after most of well be close adopt when, in fracturing fluid recovery (backflow) and manufacturing process, which layer, which section reservoir, for the contribution of Development and Production liquid measure, there is no quick, effective way at present and monitor.When which layer fluid after this kind of well measure, gone out how much liquid again, the methods such as geological information well logging routinely, formation testing such as fluid cannot obtain.
Summary of the invention: the object of this invention is to provide a kind of safety, convenient, efficient production capacity is followed the tracks of and evaluation method, which overcome the shortcoming of current technology, the object of the present invention is achieved like this, it is according to working design, in fracturing process, using fracturing fluid as carrier, uniform stake indicator solution, fracturing fluid and indicator solution is made to enter in the middle of different reservoirs, when after pressure break, open flow returns discharging liquid, take Continuous Tracking to monitor admission and return discharging liquid sample, after institute's sample thief is carried out the pre-pre-treatment of sample, by indicator solution detector the sample after pre-pre-treatment detected respectively again and process, record a series of valid data, by special interpretation software, integrated interpretation is carried out to valid data.
Contain in working design in construction object, the kind of indicator solution used and quantity, the stake technique of indicator solution, well and return the preservation way returning discharging liquid sample in the admission of discharging liquid sample Continuous Tracking, method of measurement and well.
Stake indicator solution has good compatibility, must meet nonhazardous, radiationless, pollution-free to reservoir, with fracturing fluid and formation water without chemical reaction, has good compatibility; Special stake device is used during the construction of stake indicator solution.
Return sample transmittance more than 98% after the pre-pre-treatment of discharging liquid sample in well, indicator solution content is constant before and after the pre-pre-treatment of sample.
Indicator solution detecting instrument be to the pre-pre-treatment of sample after sample be separated, analyze, detect.
The data detected by indicator solution detector carry out by special interpretation software output capacity (contribution rate), the liquid-producing capacity status analysis that comprehensive analysis processing provides each layer (section) after layering (section) pressure break.
Indicator solution heatproof 200 oc, withstand voltage 150MPa; Shear resistant at 120 DEG C, 170S -1speed down cut 90min, indicator solution performance is constant; Detectable concentration ppb level, adds concentration 0.01 ~ 0.015%; PH value (accommodation): 3-11; Period of validity:>=500 days.
Meaning of the present invention is: layering (section) fracturing reform process indicator solution being used for oil gas water well, close adopt situation under obtain output capacity (contribution rate) size of fractured well different reservoir, pressure break after the information such as analysis of different reservoir liquid-producing capacity situation, thus obtain the revision, perfect of fracturing effect and the follow-up fractured well Fracturing Project evaluating this well time, improve the optimum efficiency of oil gas water well layering (section) fracturing reform.
Accompanying drawing illustrates: Fig. 1 is that production capacity is followed the tracks of and the flow chart of evaluation method, in figure 1, stake 3, fracturing fluid 4, the reservoir 5 of working design 2, indicator solution, returns discharging liquid 6, the pre-pre-treatment of sample 7, indicator solution detecting instrument 8, special interpretation software.
Detailed description of the invention: embodiment 1, foundation working design, in fracturing process, using fracturing fluid as carrier, uniform stake indicator solution, fracturing fluid and indicator solution is made to enter in the middle of different reservoirs, when after pressure break, open flow returns discharging liquid, take Continuous Tracking to monitor admission and return discharging liquid sample, after institute's sample thief is carried out the pre-pre-treatment of sample, by indicator solution detector the sample after pre-pre-treatment detected respectively again and process, record a series of valid data, by special interpretation software, integrated interpretation is carried out to valid data.
Embodiment 2, contain in working design in construction object, the kind of indicator solution used and quantity, the stake technique of indicator solution, well and return the preservation way returning discharging liquid sample in the admission of discharging liquid sample Continuous Tracking, method of measurement and well.
Embodiment 3, stake indicator solution have good compatibility, must meet nonhazardous, radiationless, pollution-free to reservoir, with fracturing fluid and formation water without chemical reaction, have good compatibility; Special stake device is used during the construction of stake indicator solution.
Return sample transmittance more than 98% after the pre-pre-treatment of discharging liquid sample in embodiment 4, well, indicator solution content is constant before and after the pre-pre-treatment of sample.
Embodiment 5, YTJ indicator solution detecting instrument are separated the sample after the pre-pre-treatment of sample, analyze, detect.
Embodiment 6, the data that detected by indicator solution detector carry out by special interpretation software output capacity (contribution rate), the liquid-producing capacity status analysis that comprehensive analysis processing provides each layer (section) after layering (section) pressure break.
Embodiment 7, indicator solution heatproof 200 oc, withstand voltage 150MPa; Shear resistant at 120 DEG C, 170S -1speed down cut 90min, indicator solution performance is constant; Detectable concentration ppb level, adds concentration 0.01 ~ 0.015%; PH value (accommodation): 3-11; Period of validity:>=500 days.
  

Claims (7)

1. production capacity is followed the tracks of and evaluation method, it is characterized in that: the indicator solution of different model is bet in the fracturing fluid of different layers (section) according to working design, and together enter reservoir with fracturing fluid, discharging liquid sample is returned in Continuous Tracking admission well in open flow process after pressure break, the volume of discharging liquid is returned every day in metering well, the pre-pre-treatment of discharging liquid sample will be returned, undertaken being separated by indicator solution detecting instrument, analyze, detected, then undertaken by special interpretation software processing the geological information such as output capacity (contribution rate), production capacity situation of trying to achieve each reservoir of fractured well.
2. production capacity according to claim 1 is followed the tracks of and evaluation method, it is characterized in that: working design contains in construction object, the kind of indicator solution used and quantity, the stake technique of indicator solution, well returns the preservation way returning discharging liquid sample in the admission of discharging liquid sample Continuous Tracking, method of measurement and well.
3. indicator solution according to claim 1, is characterized in that: stake indicator solution has good compatibility, must meet nonhazardous, radiationless, pollution-free to reservoir, with fracturing fluid and formation water without chemical reaction, has good compatibility; Special stake device is used during the construction of stake indicator solution.
4. production capacity according to claim 1 is followed the tracks of and evaluation method, it is characterized in that: return sample transmittance more than 98% after the pre-pre-treatment of discharging liquid sample in well, indicator solution content is constant before and after the pre-pre-treatment of sample.
5. production capacity according to claim 1 is followed the tracks of and evaluation method, it is characterized in that: indicator solution detecting instrument be to the pre-pre-treatment of sample after sample be separated, analyze, detect.
6. production capacity according to claim 1 is followed the tracks of and evaluation method, it is characterized in that: to be the data that detected by indicator solution detector carry out by special interpretation software output capacity (contribution rate), the liquid-producing capacity status analysis that comprehensive analysis processing provides each layer (section) after layering (section) pressure break to special interpretation software.
7. the indicator solution described in claim 1 or 3, is characterized in that: heatproof 200 oc, withstand voltage 150MPa; Shear resistant at 120 DEG C, 170S -1speed down cut 90min, indicator solution performance is constant; Detectable concentration ppb level, adds concentration 0.01 ~ 0.015%; PH value (accommodation): 3-11; Period of validity:>=500 days.
CN201410385693.0A 2014-08-07 2014-08-07 Capacity tracking and evaluating method Pending CN104265259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410385693.0A CN104265259A (en) 2014-08-07 2014-08-07 Capacity tracking and evaluating method

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Application Number Priority Date Filing Date Title
CN201410385693.0A CN104265259A (en) 2014-08-07 2014-08-07 Capacity tracking and evaluating method

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CN104265259A true CN104265259A (en) 2015-01-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246154A (en) * 2016-08-30 2016-12-21 员增荣 Production capacity is followed the tracks of and evaluation methodology
CN107451671A (en) * 2016-06-01 2017-12-08 中国石油化工股份有限公司 For predicting the method and system of initial production capacity after shale formation pressure break
CN107795310A (en) * 2016-09-07 2018-03-13 中国石油化工股份有限公司 The long-term method for real time tracking of staged fracturing of horizontal well effect
CN113756790A (en) * 2021-09-07 2021-12-07 西安石油大学 Novel multi-section productivity evaluation method for oil and gas well

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107451671A (en) * 2016-06-01 2017-12-08 中国石油化工股份有限公司 For predicting the method and system of initial production capacity after shale formation pressure break
CN107451671B (en) * 2016-06-01 2021-03-26 中国石油化工股份有限公司 Method and system for predicting initial capacity of shale formation after fracturing
CN106246154A (en) * 2016-08-30 2016-12-21 员增荣 Production capacity is followed the tracks of and evaluation methodology
CN107795310A (en) * 2016-09-07 2018-03-13 中国石油化工股份有限公司 The long-term method for real time tracking of staged fracturing of horizontal well effect
CN107795310B (en) * 2016-09-07 2020-05-15 中国石油化工股份有限公司 Long-term real-time tracking method for staged fracturing effect of horizontal well
CN113756790A (en) * 2021-09-07 2021-12-07 西安石油大学 Novel multi-section productivity evaluation method for oil and gas well
CN113756790B (en) * 2021-09-07 2023-10-03 西安石油大学 Multi-section productivity evaluation method for oil and gas well

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Application publication date: 20150107