CN102477861A - Combined compound synergistic perforating and testing technique - Google Patents
Combined compound synergistic perforating and testing technique Download PDFInfo
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- CN102477861A CN102477861A CN2010105628752A CN201010562875A CN102477861A CN 102477861 A CN102477861 A CN 102477861A CN 2010105628752 A CN2010105628752 A CN 2010105628752A CN 201010562875 A CN201010562875 A CN 201010562875A CN 102477861 A CN102477861 A CN 102477861A
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Abstract
The invention discloses a combined compound synergistic perforating and testing technique which is characterized in that aiming at the characteristics that low-pressure, low-permeability and low-productivity-layer sandstone and limestone oil-gas reservoir blocks are large in pilot production and non-obvious in acid stimulation effect, an oil-gas production increasing and reserves increasing effect is achieved through using a combined compound perforating and combined testing oil test technique, and the combined perforating and testing technique is an important link in the exploration and development of oil-gas fields; and through a combined test, a perforating operation and a formation testing operation are completed in one time, thereby avoiding the occurrence of secondary pollution and damages of kill fluid to formations, providing the most exact formation data, shortening the operation cycle, and saving the construction cost.
Description
Affiliated technical field
The present invention relates to a kind of composite synergistic perforation couplet and make measuring technology, belong to technical field of petroleum extraction.
Background technology
The experience of domestic utilization composite gun perforation and testing combination operation is also quite weak, does not form a cover mature technique measure, job specification, data processing method, has the technological difficulties of many enforcements to be still waiting further to capture.Mostly still adopt composite gun perforation, twice tubing string of test at present, composite gun perforation-test is separately independently carried out.
Summary of the invention
The objective of the invention is to composite synergistic perforation-formation testing united two into one, twice tubing string and a tubing string through the corresponding techniques tackling key problem; Secondary pollution and the injury of avoiding well killing fluid that the stratum is caused; The most real formation data is provided, shortens duty cycle, practice thrift operating expenses.
(1) form cover composite synergistic combined operation of perforation and testing technical measures, job specification, and the processing method of suitable test data.Adopt built-in composite perforator.The burning velocity of built-in composite perforator gunpowder receives the subsurface environment factor affecting very little, as long as the filling dose is suitable, the down-hole very low at environment stress also can produce higher surge pressure, so it is best suited for the low well of reservoir pressure coefficient.Secondly, the pressure climbing speed is fast, generally between 2.0 * 104～1.0 * 105MPa/s; The crack number that produces is many, and is best to the transformation of eyelet compaction band, but powder combustion time is too short; Pressure has only 8～10ms effective acting time, and the crack just forms, and gunpowder is with regard to all burnt; Do not have follow-up energy gull scale, more can not cause liquid fluctuation in the well, so it is not suitable for the heavier well of formation contaminant.Because gunpowder is seated in the perforating gun, it can bear the down-hole high temperature, high pressure liquid and soak for a long time, is applicable to tubing conveyed perforation (tcp).
(2) supporting all-pass footpath testing tool, through subtracting flushing device: snubber, radially casing pressure damper and vertical hydraulic shock-absorption etc. can guarantee that test safety carries out.Telescopic snubber is by top connection, buffering urceolus, floating piston, jointing, buffering mandrel, lower contact composition.Axle is in extended state when going into the well.Dynamic high-pressure during operation makes axle can compress 2.0m vertically.Its function: one provides the space that tubing string moves upward behind the perforation, alleviates perforating gun is scurried generation on moment impact force; The 2nd, through the mechanical displacement absorption energy of mandrel, the displacement of the above pipe string of minimizing instrument.Radially the casing pressure damper utilizes spring and aperture to stream the effect that cushioning principle can play two aspects: the one, and slow down the hard collision of the tubing string and the borehole wall and cause strong motion; The 2nd, slow down the direct effect of strong shock wave to packer.Vertical hydra-cushion shock tool: on the basis on spring shock absorption instrument basis, design a plurality of damping holes, make to be communicated with annular space and cavity, when scurrying on the tubing string, can absorb impact energy, further weaken the impact of collision vibrations of perforation system to testing tool, instrument.
(3) pass through software simulation, finally accomplish reasonable security gunpowder consumption, the curve match mutually of prediction p-t curve and down-hole actual measurement p-t.
" formation testing engineering aid decision-making system software " is the basis with up-to-date theoretical research result; Utilized advanced computer software technology; Multiple functional, user interface is friendly, easy to use, through the contrast tentative calculation, can survey on the computational item of checking at some; Compress distance etc. like setting of packer, the error between its calculated value and the measured value is less than 3%.A whole set of software is made up of basic data input, casing program input, test string design, pressure reduction analysis, test string mechanical analysis, casing string mechanical analysis, eight modules of data base administration; Be the integration environment that the user provides the formation testing engineering analysis to calculate, contained all calculating contents that relate in the formation testing engineering design and construction basically.
(4) effective pit shaft safety precautions, the safety of guarantee sleeve pipe, oil pipe, testing tool and pressure bomb.
This technology may be used on lithology densification, little, the low hole of ductility, hypotonic, connective poor, and reservoir space is complicated, and natural production capacity is low; The amplitude of successively decreasing is bigger; In the oil-gas Layer transformation of exploitation difficulty and the test, be the evaluation of oilfield prospecting developing, provide reliably, test result accurately.
The specific embodiment
Formulate cover composite synergistic combined operation of perforation and testing technical measures, job specification, and the processing method of suitable test data, built-in composite perforator adopted.Supporting all-pass footpath testing tool, through subtracting flushing device: snubber, radially casing pressure damper and vertical hydraulic shock-absorption etc. can guarantee that test safety carries out.Through software simulation, finally accomplish reasonable security gunpowder consumption, the curve match mutually of p-t is surveyed in prediction p-t curve and down-hole.
Claims (1)
1. the invention discloses a kind of composite synergistic perforation couplet and make measuring technology, it is characterized in that following these steps to test:
(1), formulate cover composite synergistic combined operation of perforation and testing technical measures, job specification, and the processing method of suitable test data adopts built-in composite perforator.
(2), supporting all-pass footpath testing tool, through subtracting flushing device: snubber, radially casing pressure damper and vertical hydraulic shock-absorption etc. can guarantee that test safety carries out.
(3), through software simulation, finally accomplish reasonable security gunpowder consumption, the curve match mutually of p-t is surveyed in prediction p-t curve and down-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105628752A CN102477861A (en) | 2010-11-29 | 2010-11-29 | Combined compound synergistic perforating and testing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105628752A CN102477861A (en) | 2010-11-29 | 2010-11-29 | Combined compound synergistic perforating and testing technique |
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| Publication Number | Publication Date |
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| CN102477861A true CN102477861A (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105628752A Pending CN102477861A (en) | 2010-11-29 | 2010-11-29 | Combined compound synergistic perforating and testing technique |
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| CN (1) | CN102477861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045579A (en) * | 2017-04-25 | 2017-08-15 | 西南石油大学 | Downhole perforation testing tool string optimization method based on oil pipe column stability and safety analysis |
| CN107423471A (en) * | 2017-04-25 | 2017-12-01 | 西南石油大学 | Downhole perforation testing tool string optimization method based on packer force analysis |
| CN108397185A (en) * | 2018-04-12 | 2018-08-14 | 宝鸡市元亨石油设备有限责任公司 | A kind of cable layering rapid determination tube column |
-
2010
- 2010-11-29 CN CN2010105628752A patent/CN102477861A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045579A (en) * | 2017-04-25 | 2017-08-15 | 西南石油大学 | Downhole perforation testing tool string optimization method based on oil pipe column stability and safety analysis |
| CN107423471A (en) * | 2017-04-25 | 2017-12-01 | 西南石油大学 | Downhole perforation testing tool string optimization method based on packer force analysis |
| CN107045579B (en) * | 2017-04-25 | 2020-04-07 | 西南石油大学 | Downhole perforation test tool string optimization method based on stability and safety analysis of tubing string |
| CN107423471B (en) * | 2017-04-25 | 2020-06-16 | 西南石油大学 | Downhole perforation test tool string optimization method based on packer stress analysis |
| CN108397185A (en) * | 2018-04-12 | 2018-08-14 | 宝鸡市元亨石油设备有限责任公司 | A kind of cable layering rapid determination tube column |
| CN108397185B (en) * | 2018-04-12 | 2024-01-26 | 宝鸡市元亨石油设备有限责任公司 | Quick test tube post of cable layering |
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Application publication date: 20120530 |