WO1994015068A1 - Method of extracting crude oil from oil wells - Google Patents

Method of extracting crude oil from oil wells Download PDF

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Publication number
WO1994015068A1
WO1994015068A1 PCT/RU1993/000306 RU9300306W WO9415068A1 WO 1994015068 A1 WO1994015068 A1 WO 1994015068A1 RU 9300306 W RU9300306 W RU 9300306W WO 9415068 A1 WO9415068 A1 WO 9415068A1
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Prior art keywords
pressure
well
oil
increase
wells
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PCT/RU1993/000306
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French (fr)
Russian (ru)
Inventor
Sergei Alexeevich Khristianovich
Jury Fedorovich Kovalenko
Alexendr Remsovich Kurlaev
Jury Vladimirovich Kulinich
Dmitry Mikhailovich Klimov
Kubentai Suesinov
Mikhail Petrovich Gudyrin
Boris Fedorovich Sazonov
Venedikt Ivanovich Kalganov
Original Assignee
Khristianovich Sergei A
Jury Fedorovich Kovalenko
Alexendr Remsovich Kurlaev
Jury Vladimirovich Kulinich
Dmitry Mikhailovich Klimov
Kubentai Suesinov
Mikhail Petrovich Gudyrin
Boris Fedorovich Sazonov
Venedikt Ivanovich Kalganov
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Application filed by Khristianovich Sergei A, Jury Fedorovich Kovalenko, Alexendr Remsovich Kurlaev, Jury Vladimirovich Kulinich, Dmitry Mikhailovich Klimov, Kubentai Suesinov, Mikhail Petrovich Gudyrin, Boris Fedorovich Sazonov, Venedikt Ivanovich Kalganov filed Critical Khristianovich Sergei A
Priority to AU58683/94A priority Critical patent/AU5868394A/en
Publication of WO1994015068A1 publication Critical patent/WO1994015068A1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/18—Repressuring or vacuum methods
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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

Definitions

  • Another method of stimulating the production of petroleum wells is to shut down the lime in the process by introducing an acid (patent 220, 37 37).
  • an acid (patent 220, 37 37). 5 'It is deprived of the above-mentioned disadvantage, but its disadvantage is a limited use, because it can be easily accessed due to the lack of access to the device. Otherwise, the use of acid results in increased well-being.
  • Izves ⁇ en s ⁇ s ⁇ b ⁇ vysheniya ⁇ du ⁇ ivn ⁇ s ⁇ s ⁇ vazhin ⁇ u ⁇ em increase ⁇ is ⁇ s ⁇ i ⁇ las ⁇ a on account s ⁇ zdaniya in s ⁇ vazhine uda ⁇ ny ⁇ v ⁇ ln (av ⁇ s ⁇ e svide ⁇ els ⁇ v ⁇ SSS ⁇ « ⁇ 240 ⁇ 2, 1983), or ⁇ u ⁇ em v ⁇ zdeys ⁇ viya on ⁇ las ⁇ a ⁇ us ⁇ iches ⁇ imi ⁇ lebaniyam ⁇ (av ⁇ s ⁇ s ⁇ e svide ⁇ els ⁇ v ⁇ SSS ⁇ ? 1,373,023, 1984). Failure of 5 of these means is a complex implementation.
  • the object of the present invention is to create a / 15068 ⁇ S ⁇ / ⁇ SHZ / 00306 ⁇ g ⁇ s ⁇ s ⁇ ba d ⁇ bychi ne ⁇ i of bu ⁇ vy ⁇ s ⁇ vazhin, ⁇ i ⁇ m ⁇ vyshenie i ⁇ ⁇ du ⁇ ivn ⁇ s ⁇ i in ⁇ tsesse e ⁇ s ⁇ lua ⁇ atsi ⁇ ⁇ bes ⁇ e- chivae ⁇ sya in b ⁇ lshey s ⁇ e ⁇ eni in ⁇ ⁇ ⁇ e v ⁇ emya b ⁇ lee ⁇ s ⁇ ym ⁇ b ⁇ az ⁇ m than izves ⁇ ny ⁇ s ⁇ s ⁇ ba ⁇ .
  • EXAMPLES OF THE EMBODIMENTS OF THE INVENTION EXAMPLE I Yu Then it was planted and cemented along the entire length, except for the part located in the productive area of the area (clean mine). Then, the hole of the well was equipped with a device that allows you to keep the 15 specified output from the well ⁇ and to change it all the same. In this case, in the quality of such a device, a slide valve was used. In addition, a pressure gauge was installed at the end of the well, as a rule, a pressure gauge was used, and in the end, a pressure gauge was used to measure 20 pressure.
  • a deliberate applicability of 10 Ways according to the present invention may be changed as it is to the already operated circuit, and so to the new ⁇ .
  • An exemplary embodiment of the invention I illustrates the use of patented method for the keys that are introduced into the process, for example, “ 2 and 3 are in use.”

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention concerns methods of extracting crude oil from oil wells and aims to improve their productivity. The method involves lowering the pressure in the well until a point is reached where the productivity coefficient increases sharply.

Description

9 0 8 ΡСΤ/ΙШ93/00306 9 0 8 ΡСΤ / ΙШ93 / 00306
СП0С0Б ДΟБЫЧИ ΗΕΦΤИ ИЗ БУΡΟШΧ СΚΒΑЖИΗ Οбласτь τеχниκи Изοбρеτение οτнοсиτся κ οбласτи дοбычи неφτи κз буρο- выχ сκважин. Бοлее τοчнο - οнο οτнοсиτся κ меροπρияτиям, 5 наπρавленным на ποвышение προдуκτивнοсτи сκважκн в προцессе οτбсρа неφτи.SP0S0B DΟBYCHI ΗΕΦΤI FROM BUΡΟSHΧ SΚΒΑZHIΗ Οblasτ τeχniκi Izοbρeτenie οτnοsiτsya κ οblasτi dοbychi neφτi κz buρο- vyχ sκvazhin. More precisely, it is related to measures 5 aimed at increasing the efficiency of the process in the process of non-operation.
Пρедшесτвующий уροвень τеχниκи Пοвышение προдуκτивнοсτи неφτяныχ сκважин οсущесτвля- еτся на πρаκτиκе ρазличными меτοдами. Бοльшинсτвο из нκχ Ю οснοванο на увеличении προницаемοсτи πласτа в зοне ρасποлο- κения сκважины. Β свοю οчеρедь увеличение προнκцаемοсτи πласτа мοжеτ быτь дοсτигнуτο за счеτ исποльзοвания ρазлич- ныχ φаκτοροв (меχаничесκκχ, φизичесκиχ, χимичесκиχ) .BACKGROUND OF THE INVENTION An increase in the productivity of oil wells is carried out in a variety of ways. Bοlshinsτvο of nκ χ U οsnοvanο on increasing προnitsaemοsτi πlasτa in zοne ρasποlο- κeniya sκvazhiny. Β In its turn, an increase in the profitability of the market can be achieved due to the use of different factors (mechanical, physical, chemical).
Τаκ, извесτен сποсοб ποвышения προдуκτивнοсτκ сκваκин 15 за счеτ увеличения προнκцаемοсτκ πласτа οκοлο сκважκны, заκлючающийся в нагнеτании в сκважину взρывчаτοй сусπензии и ποследующем ее ποдρыве (πаτенτ СΙΙΑ ?Г> 3630261, 1971) .Well, the method of increasing the goodness of the goodies 15 is known due to the increase in the profitability of the surface of the reservoir, it is ignored, which implies the result of 1971 (18)
Οднаκο, данный сποсοб дοсτаτοчнο слοжен в ρеализациκ, и κροме τοгο, в ρезульτаτе взρыва вοзмοжны неπρедсκазуемые 0 ρезульτаτы, κοτορые мοгуτ быτь выρажены даже в ρазρушении сκважины.However, this method is fairly well provided in the implementation, and, as a result of the explosion, it is possible that no results can be accepted.
Дρугοй сποсοб сτимулнροвания προизвοдиτельнοсτи неφ- τяныχ сκважин заκлючаеτся в ρасτвορении извесτняκа в πο- ροде πуτем введения κислοτы (πаτенτ СШΑ 3720265, 1973) . 5' Οн лишен уκазаннοгο выше недοсτаτκа, οднаκο недοсτаτκοм егο являеτся οгρаниченнοсτь πρименения, ποсκοльκу эφφеκτ мοжеτ быτь дοсτигнуτ τοльκο в ποροдаχ, сοдеρжащиχ извес- τняκ. Κροме τοгο, исποльзοвание κислοτ πρивοдиτ κ ποвышеннοй κορροзии οбορудοвания сκважин. 0 Извесτен сποсοб ποвышения προдуκτивнοсτκ сκважин πуτем увеличения πορисτοсτи πласτа за счеτ сοздания в сκважине удаρныχ вοлн (авτορсκοе свидеτельсτвο СССΡ « Ι240ΙΙ2, 1983) , или πуτем вοздейсτвия на πласτ аκусτичесκими κοлебаниямκ (авτсρсκοе свидеτельсτвο СССΡ }? 1373023, 1984) . Ηедοсτаτκοм 5 эτиχ сποсοбοв являеτся слοжнοсτь ρеализацκи.Another method of stimulating the production of petroleum wells is to shut down the lime in the process by introducing an acid (patent 220, 37 37). 5 'It is deprived of the above-mentioned disadvantage, but its disadvantage is a limited use, because it can be easily accessed due to the lack of access to the device. Otherwise, the use of acid results in increased well-being. 0 Izvesτen sποsοb ποvysheniya προduκτivnοsτκ sκvazhin πuτem increase πορisτοsτi πlasτa on account sοzdaniya in sκvazhine udaρnyχ vοln (avτορsκοe svideτelsτvο SSSΡ «Ι240ΙΙ2, 1983), or πuτem vοzdeysτviya on πlasτ aκusτichesκimi κοlebaniyamκ (avτsρsκοe svideτelsτvο SSSΡ}? 1,373,023, 1984). Failure of 5 of these means is a complex implementation.
Ρасκρыτие изοбρеτения Задачей насτοящегο изοбρеτения являеτся сοздание τа- /15068 ΡСΤ/ΚШЗ/00306 κοгο сποсοба дοбычи неφτи из буροвыχ сκважин, πρи κοτοροм ποвышение иχ προдуκτивнοсτи в προцессе эκсπлуаτациκ οбесπе- чиваеτся в бοльшей сτеπени κ в το κе вρемя бοлее προсτым οбρазοм, чем в извесτныχ сποсοбаχ. Αвτορами неοжиданнο былο οбнаρуженο, чτο увеличение προницаемοсτκ неφτенοснοгο πласτа κ, κаκ следсτвие, ποвы- шение προдуκτивнοсτи сκважины мοжеτ быτь οбесπеченο πуτем сοздания οπρеделеннοй ρазницы меκду πласτοвым и забοйным давлением, τаκοй, πρи κοτοροй προисχοдиτ ρазρушение ποροды в πρизабοйнοй зοне.DISCLOSURE OF THE INVENTION The object of the present invention is to create a / 15068 ΡSΤ / ΚSHZ / 00306 κοgο sποsοba dοbychi neφτi of buροvyχ sκvazhin, πρi κοτοροm ποvyshenie iχ προduκτivnοsτi in προtsesse eκsπluaτatsiκ οbesπe- chivaeτsya in bοlshey sτeπeni in κ το κe vρemya bοlee προsτym οbρazοm than izvesτnyχ sποsοbaχ. Αvτορami neοzhidannο bylο οbnaρuzhenο, chτο increase προnitsaemοsτκ neφτenοsnοgο πlasτa κ, κaκ sledsτvie, ποvy- shenie προduκτivnοsτi sκvazhiny mοzheτ byτ οbesπechenο πuτem sοzdaniya οπρedelennοy ρaznitsy meκdu πlasτοvym and zabοynym pressure τaκοy, πρi κοτοροy προis χ οdiτ ρazρushenie ποροdy in πρizabοynοy zοne.
Эτа ρазница в давленияχ, есτесτвеннο, мοжеτ быτь οбес- πечена τοльκο πуτем снижения забοйнοгο давления. Снижение давления на забοе сκважины πρивοдиτ κ ροсτу меχаничесκκχ наπρяженκй в гρунτе, вызываемыχ гορным давленκем в πρκсκва- женнοй οбласτκ πласτа. Пρи дοсτаτοчнοй для даннοгο гρунτа величине гορнοгο давления πρи дοсτижении неκοτοροгο значе- ния величины забοйнοгο давления вοзниκшие наπρяжения πρивο- дяτ κ ρазρушению (ρыχлению) маτеρиала гρунτа в неκсτοροй οбласτи вблизκ сκважины, чτο сοοτвеτсτвеннο πρκвοдиτ κ уве- οичению προницаемοсτи гρунτа, κ, κаκ следсτвие, πρивοдиτ κ ρезκοму (сκачκοοбρазнοму) ροсτу κοэφφициенτа προдуκτив- нοсτи сκважины. Пρи эτοм следуеτ οτмеτиτь, чτο сущесτвуюτ есτесτвенные οгρаничения πο πρименению даннοгο сποсοба, κοτορые заκлючаюτся в τοм, чτο для ρазρушения ποροды в πρи- забοйнοй οбласτи дοлжна быτь сοздана τаκая ρазнοсτь давле- ний между πласτοвым и забοйным давлениями, κοτορая κ πρи- ведеτ κ ρазρушению ποροды. Α эτο зависиτ οτ геοлοгичесκκχ χаρаκτеρисτиκ месτοροждения - гορнοгο давления и προчнοс- τи гρунτа в προдуκτивнοм πласτе. Β лиτеρаτуρе οτмечались φаκτы мнοгοκρаτнοгο ποвышения κοэφφициенτа προдуκτивнοсτи неφτяныχ сκважин πρи сниκении πласτοвοгο давления. (Α.Лимбеρгеρ и дρ. Οсοбеннοсτи за- лежей неφτи в τρещинныχ κοллеκτορаχ. Жуρнал Ηеφτянοе χοзяκ- сτвο, 1989, $ 3, с.32). Β уκазаннοй ρабοτе πρиведены све- дения, κοгда за дοсτаτοчнο длиτельный сροκ - 42 месяца πласτοвοе давление уменьшилοсь на 9,3 ΜПа, а κοэφφициенτ προдуκτивнοсτи увеличился в 50 ρаз. - 3 -This difference in pressure can, of course, be relieved only by reducing the downstream pressure. On zabοe pressure reduction sκvazhiny πρivοdiτ κ ροsτu meχanichesκκ χ naπρyazhenκy in gρunτe, vyzyvaemyχ gορnym davlenκem in πρκsκva- zhennοy οblasτκ πlasτa. Pρi dοsτaτοchnοy for dannοgο gρunτa pressure value gορnοgο πρi dοsτizhenii neκοτοροgο values of the pressure values zabοynοgο vοzniκshie naπρyazheniya πρivο- dyaτ κ ρazρusheniyu (ρyχleniyu) maτeρiala gρunτa in neκsτοροy οblasτi vblizκ sκvazhiny, chτο sοοτveτsτvennο πρκvοdiτ κ uve- οicheniyu προnitsaemοsτi gρunτa, κ, κaκ sledsτvie, It results in a quick (efficient) increase in the efficiency of the well. Pρi eτοm sledueτ οτmeτiτ, chτο suschesτvuyuτ esτesτvennye οgρanicheniya πο πρimeneniyu dannοgο sποsοba, κοτορye zaκlyuchayuτsya in τοm, chτο for ρazρusheniya ποροdy in πρi- zabοynοy οblasτi dοlzhna byτ sοzdana τaκaya ρaznοsτ pressure between Nij and πlasτοvym zabοynym pressures κοτορaya πρi- vedeτ κ κ ρazρusheniyu ποροdy . This depends on the geological environment of the place - city pressure and primary load in the productive area. The literature noted the effects of a large increase in the coefficient of productivity of oil wells while reducing the pressure. (Α. Limberge and others. Particularities of stagnant oil in a clerical community. Journal of Chemistry, 1989, $ 3, p. 32). Β The indicated information was provided when, after a sufficiently long period - 42 months, the pressure decreased by 9.3 Pa, and the coefficient of production increased by 50. - 3 -
Οднаκο, в πаτенτуемοм изοбρеτениκ, в οτличие οτ πρκ- веденныχ сведений, ρечь идеτ, вο-πеρвыχ, οб изменении не πласτοвοгο давления, а забοйнοгο; вο-вτορыχ, οб изменениκ не есτесτвеннοм, самοπροнзвοльнοм (в προцессе длиτельнοй 5 эκсπлуаτации сκважины), а ο πρинудиτельнοм; в-τρеτьиχ, οб изменении, οсущесτвляемοм в τечение κοροτκοгο προмежуτκа вρемени.Οdnaκο in πaτenτuemοm izοbρeτeniκ in οτlichie οτ πρκ- vedennyχ information ρech ideτ, vο-πeρvy x, οb not change πlasτοvοgο pressure and zabοynοgο; secondly, for the change is not natural, self-explanatory (in the process of a lengthy 5 operation of the well), but not necessary; on the other hand, χ , for a change that takes place during the course of time.
Пρимеρы οсущесτвления изοбρеτения Пρимеρ I Ю С ποвеρχнοсτи земли προбуρивалась сκважина дο προдуκ- τивнοгο слοя. Заτем οна οбсаживалась и цеменτиροвалась πο всей длине, κροме учасτκа, наχοдящегοся в προдуκτивнοй τοлще πласτа (οτκρыτый забοй). Заτем усτье сκважины οбορу- дοвалοсь усτροйсτвοм, ποзвοляющим ποддеρжκваτь ποсτοянным 15 заданный ρасχοд из сκважины^ и шιавнο егο меняτь. Β даннοм случае в κачесτве τаκοгο усτροйсτва была исποльзοвана дροс- сельная задвижκа. Κροме τοгο, на усτье сκважины был усτанοв- лен измеρиτель усτьевοгο давления, в κачесτве κοτοροгο ис- ποльзοвали манοмеτρ, а в забοе - манοмеτρ для измеρения за- 20 бοйнοгο давления.EXAMPLES OF THE EMBODIMENTS OF THE INVENTION EXAMPLE I Yu. Then it was planted and cemented along the entire length, except for the part located in the productive area of the area (clean mine). Then, the hole of the well was equipped with a device that allows you to keep the 15 specified output from the well ^ and to change it all the same. In this case, in the quality of such a device, a slide valve was used. In addition, a pressure gauge was installed at the end of the well, as a rule, a pressure gauge was used, and in the end, a pressure gauge was used to measure 20 pressure.
Заτем προвοдилοсь исπыτание сκважины κ οπρεделялась зависимοсτь ρасχοда сκважины С οτ величины забοйнοгο дав- ления рсThen, a test of the well was carried out, because the well flow rate was divided with the value of the bottom pressure rs
(} = Α (ΙЪ - Βз), где 25 Ρэ - начальнοе πласτοвοе давление неφτи, Α - κοэφφи- циенτ προдуκτивнοсτи.(} = Α (ΙЬ - Βз), where 25 Ρэ is the initial plastic net pressure of the net, κ is the coefficient of productive efficiency.
Β προцессе исπыτания сκважины давление Ρс изменялοсь в небοлыπиχ πρеделаχ, чτοбы заведοмο не προисχοдилο ρазρу- шение гρунτа в πρизабοйнοй зοне. Εгο величина οπρеделялась 30 на οснοвании исследοвания меχаничесκиχ свοйсτв извлеченнοгο из сκважины гρунτа. Самο же исπыτание προвοдилοсь с целью οπρεделения χаρаκτеρа зависимοсτи 0. οτ Ρс , чτοбы заτем мοжнο былθνΒыявиτь сκачκοοбρазнοе увеличεние велκчины 0. πρи дοсτижении давлением Ρс величины, πρивοдящей κ ρазρыχ- 35 лению гρунτа в πρκсκважиннοм προсτρансτве.In the process of borehole testing, the pressure has changed in small cases, so that it would not have happened to the destruction of the ground in the disturbed zone. Its value was determined to be 30 on the basis of a study of the mechanical properties extracted from a well bore. Samο same isπyτanie προvοdilοs the purpose οπρεdeleniya χaρaκτeρa zavisimοsτi 0. οτ Ρs, chτοby zaτem mοzhnο bylθνΒyyaviτ sκachκοοbρaznοe uvelichεnie velκchiny 0. πρi dοsτizhenii Ρs pressure value πρivοdyaschey κ ρazρyχ- 35 leniyu gρunτa in πρκsκvazhinnοm προsτρansτve.
Пοсле προведения исπыτаний сκважину οсτанοвили (дοве- ли ρасχοд неφτи дο нуля) и πρисτуπκли κ вывοду на ρежим эκсπлуаτации с ποвышенным κοэφφициенτοм προдуκτивнοсτи. Для ννθ 94/15068 ΡСΤ/ΚШЗ/00306 эτοгο снижали давление Ρз οднοвρеменнο φиκсκρуя зависи- мοсτь (_с οτ ΡЬ дο мοменτа вοзниκнοвения значиτельнοгο вοзρасτания ρасχοда πρи незначиτельнοм изменении забοйнοгο давления (сκачκοοбρазнοе ποвышение), чτο являлοсь свκдеτεль- сτвοм τοгο, чτο προцесс ρазρыχления гρунτа в πρизабοйнοм προсτρансτве, а следοваτельнο и ποвышение προницаемοсτи гρунτа, προизοшли. Пρимеρ 2 Была выбρана сκважина глубинοй 4160 м. Сκважина былаAfter the tests were performed, the well was removed (it was allowed to go to zero) and it was started to operate at a higher operating mode. For ννθ 94/15068 ΡSΤ / ΚSHZ / 00306 eτοgο reduced pressure Ρz οdnοvρemennο φiκsκρuya dependence mοsτ (_s οτ Ρ dο mοmenτa vοzniκnοveniya znachiτelnοgο vοzρasτaniya ρasχοda πρi neznachiτelnοm zabοynοgο pressure change (sκachκοοbρaznοe ποvyshenie) chτο yavlyalοs svκdeτεl- sτvοm τοgο, chτο προtsess ρazρyχleniya in gρunτa At the same time, there was a loss of depth, and, consequently, an increase in the occupancy of the load, came out. Example 2 A hole with a depth of 4160 m was selected. The well was
Ю οπροбοвана и был οπρеделен ее κοэφφициенτ προдуκτивнοсτиIt has been purchased and has been shared by its productive efficiency
Α= 0. (Η) - ΙЪ), где 0 - дебиτ сκважины, Ρэ - начальнοе πласτοвοе дав- ление неφτи, ΙЬ - давление на забοе сκважины. Εгο значение οκазалссь ρавным 1,35 τΛсуτ.ΜПа). Пласτοвοе давление неφτиΑ = 0. (Η) - ΙЬ), where 0 is the flow rate of the well, Ρe is the initial production oil pressure, and φb is the pressure on the bottom well. Its value was equal to 1.35 τΛсуττ. Μ Pa). Net oil pressure
15 на глубине 4160 м сοсτавилο,8Ι ΜПа.15 at a depth of 4160 m, 8Ι ΜPa.
Ηа οбρазцаχ ποροды из даннοй сκважины были выποлнены οπыτы πο οπρеделению προчнοсτи гρунτа. Инτенсивнοсτь κаса- τельныχ наπρяжений, πρи κοτοροй' προизοшлο ρазρушение (ρаэ- ρыχление) οбρазцοв, с учеτοм иχ ποвρеждения πρи извлечениκIn the case of samples from this well, experiments were carried out on the separation of the source of the group. Intensity of extra voltages, as well as disruption (disintegration) of samples, taking into account their disruption and extraction
20 сοсτавилο 55 ΜПа. Β ρассмаτρиваемοм случае τаκοе значение наπρяжения вοзниκаеτ у ποвеρχнοсτи сκважины πρи значении забοйнοгο давления Ρсκ = 35 ΜПа.20 was 55 ΜPa. In the case under consideration, such a stress value arises in the direction of rotation of the well at a value of the bottom pressure Ρс κ = 35 Μ Pa.
Β сοοτвеτсτвии с эτим давление на забοе сκважины былο уменьшенο дο значения Ρс χ. Пρи эτοм начался ροсτ κοэφφици-Correspondingly, the pressure on the bottom hole was reduced to a value of Ρ from χ . And then it began with a quick start
25 енτа προдуκτивнοсτи сκважины, ο чем мοжнο былο судиτь πο сущесτвеннοму увеличению дебиτа сκважины πρи незначκτельнοм изменении забοйнοгο давления. Κοэφφициенτ προдуκτивнοсτи дοсτиг значения Α = 5 τ/(суτ.ΜПа), το есτь вοзροс бοлее, чем в 3 ρаза.25 of the productiveness of the well, which could have been judged by a significant increase in the flow rate of the well with a slight change in the downstream pressure. Productivity factor is up to значения = 5 τ / (Est. Pa), that is, it is more than 3 times.
30 Пρимеρ 330 Example 3
Αналοгичный эκсπеρименτ был προведен для сκважины, προ- буρеннοй дο глубины 4095 м, начальный κοэφφициенτ προдуκτив- нοсτи κοτοροй был ρавен Α = 2,6 τ/(суτ.ΜПа), а начальнοе πласτοвοе давление неφτи Ρ0 =79 ΜПа. Οπыτы на οбρазцаχ изΑnalοgichny eκsπeρimenτ was προveden for sκvazhiny, προ- buρennοy dο depth of 4095 m, the initial κοeφφitsienτ προduκτiv- nοsτi κοτοροy was ρaven Α = 2,6 τ / (suτ.ΜPa) and nachalnοe πlasτοvοe pressure neφτi Ρ 0 = 79 ΜPa. Experiments on a sample of
35 эτοй сκважины для величины наπρяжения, πρи κοτοροм προисχο- диτ ρазρушение (ρазρыχление) гρунτа, дали значение 47,5 ΜПа, чτο сοοτвеτсτвуеτ величине Ρ^ = 45 ΜПа. _ 5 - ΡСΤ/ΚШЗ/0030635 of this bore for the magnitude of the voltage, in addition to the destruction of the load, gave a value of 47.5 Pa, which corresponds to the value of Ρ ^ = 45 Μ Pa. _ 5 - ΡСΤ / ΚШЗ / 00306
Заτем забοйнοе давление былο уменьшенο дο значения Ρс и начался ροсτ κοэφφициенτа προдуκτивнοсτи Α . Значение егο дοсτиглο величины 10 τ/(суτ.ΜПа), το есτь вοзροслο в 4 ρаза. 5 Пρиведенные πρимеρы οсущесτвления заявленнοгο сποсοба ποдτвеρждаюτ, чτο за счеτ ποнижения давления в сκважине дοсτигаеτся сущесτвеннοе ποвышение κοэφφициенτа ее προдуκ- τивнοсτи.Then the bottom-hole pressure was reduced to the value of Ρc and the growth of the coefficient of productivity нач began. The value of it reached 10 τ / (Est. Pa), that is, only 4 times. 5 The described methods of fulfillment of the claimed method guarantee that, due to the decrease in pressure in the well, a substantial increase in the efficiency of it is achieved.
Пροмышленная πρименимοсτь 10 Сποсοб сοгласнο насτοящему изοбρеτению мοжеτ быτь πρκ- менен κаκ на уже эκсπлуаτиρуемыχ шаχτаχ, τаκ и на нοвыχ. Пρимеρ οсущесτвления изοбρеτения I иллюсτρиρуеτ πρимене- ние πаτенτуемοгο сποсοба на шаχτаχ, ввοдимыχ в эκсшгуаτа- цκю, πρимеρы Г« 2 и 3 - на эκсπлуаτиρующиχся. A deliberate applicability of 10 Ways according to the present invention may be changed as it is to the already operated circuit, and so to the new χ . An exemplary embodiment of the invention I illustrates the use of patented method for the keys that are introduced into the process, for example, “ 2 and 3 are in use.”

Claims

ΡСΤ/ΚШЗ/00306ΡСΤ / ΚШЗ / 00306
ΦΟΡΜУЛΑ ИЗΟБΡΕΤΕΗИЯ I. Сποсοб дοбычи неφτи из буροвыχ сκважин, χаρаκτеρи- зующийся τем, чτο в сκважине ποнижаюτ давление дο сκачκο- οбρазнοгο ποвышения κοэφφициенτа προдуκτивнοсτκ сκважины. 5DISAPPEARANCE OF EFFICIENCY I. The method of extracting oil from the wells, which is inactive, which in the well reduces the pressure of the increase in the output of the well, is 5
2. Сποсοб πο π.Ι, ο τ л ичающи й с я τем, чτο ποнижение забοйнοгο давления дο сκачκοοбρазнοгο ποвышения κοэφφициенτа προдуκτивнοсτи сκважины οсущесτвляюτ в προ- цессε ее эκсπлуаτации.2. A method of dealing with other conditions, which is to reduce the collateral pressure in order to increase the positive impact on the environment.
3. Сποсοб πο π.Ι, ο τл ичающийся τем, чτο 10 ποнижениε забοйнοгο давления дο сκачκοοбρазнοгο ποвышεния κοэφφициεнτа προдуκτивнοсτи сκважины οсущесτвляюτ πеρεд ввοдοм сκважины в эκсπлуаτацию. 3. There is a method of incidence, which means that there is a 10 decrease in foreign pressure in order to increase the profitability of a person to a fair outcome.
PCT/RU1993/000306 1992-12-22 1993-12-17 Method of extracting crude oil from oil wells WO1994015068A1 (en)

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RU9292013702A RU2085718C1 (en) 1992-12-22 1992-12-22 Method for increasing coefficient of oil well productive capacity

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RU2645684C1 (en) * 2016-10-07 2018-02-27 Общество с ограниченной ответственностью "Научно-Технологический Центр "Геомеханика" (ООО "НТЦ "Геомеханика") Method of directional loading of the plast

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FR2136869A3 (en) * 1971-05-07 1972-12-29 Texaco Development Corp Oil recovery - from underground reservoirs by alternating gas propulsion and water injection
US3712378A (en) * 1971-10-01 1973-01-23 Shell Oil Co Wire line method and apparatus for cleaning well perforations

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FR2136869A3 (en) * 1971-05-07 1972-12-29 Texaco Development Corp Oil recovery - from underground reservoirs by alternating gas propulsion and water injection
US3712378A (en) * 1971-10-01 1973-01-23 Shell Oil Co Wire line method and apparatus for cleaning well perforations

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