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RU2039214C1 - Borehole running in method - Google Patents

Borehole running in method Download PDF

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RU2039214C1
RU2039214C1 SU5034988A RU2039214C1 RU 2039214 C1 RU2039214 C1 RU 2039214C1 SU 5034988 A SU5034988 A SU 5034988A RU 2039214 C1 RU2039214 C1 RU 2039214C1
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RU
Russia
Prior art keywords
intervals
stratums
running
pipes
formations
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Russian (ru)
Inventor
А.У. Шарипов
П.С. Лапшин
Г.С. Абдрахманов
Ю.В. Сухачев
Original Assignee
Западно-Сибирский научно-исследовательский и проектно-конструкторский институт технологии глубокого разведочного бурения
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Priority to SU5034988 priority Critical patent/RU2039214C1/en
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Publication of RU2039214C1 publication Critical patent/RU2039214C1/en

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Abstract

FIELD: mining industry. SUBSTANCE: method provides for stratums opening by drilling. Then they make test of stratums by stratum testers, exercise probe running and go to industrial running of boreholes. The method is exercised after discovery of industrial stocks of oil and gas. After detection of intervals of complications and prospective stratums diameter of borehole is expanded in the intervals. Borehole is compressed by expanding pipes casing. Then pipes outer space is grouted by hardening liquid, expanding pipes perforation is exercised in zone of prospective stratums. In stratums probe running and industrial running test process packers are mounted in the same places. They are They are mounted inside expanding pipes casing. EFFECT: boreholes running in method is used in mining industry.

Description

Изобретение относится к горной промышленности, а именно к освоению нефтяных и газовых скважин. The invention relates to the mining industry, namely to the development of oil and gas wells.

Известен способ изоляции поглощающих неустойчивых интервалов в скважинах путем установки профильных экспандируемых перекрывателей [1] Недостатком известной технологии является потеря диаметра скважин и недостаточная герметичность перекрытия, из-за чего бурение продолжают долотом меньшего диаметра и в перекрываемый пласт проникает фильтрат бурового раствора. A known method of isolating absorbing unstable intervals in wells by installing profile expandable shutoffs [1] A disadvantage of the known technology is the loss of the diameter of the wells and insufficient tightness of the overlap, which is why drilling is continued with a smaller diameter bit and the mud filtrate penetrates into the overlapped formation.

Известен способ освоения скважин, включающий вскрытие пластов бурением, выявление интервалов осложнений и перспективных пластов, испытание пластов в открытом стволе скважин, спуск и цементаж обсадной колонны, ее перфорация, пробная эксплуатация в эксплуатационной колонне, промышленная эксплуатация при обнаружении промышленных запасов нефти и газа [2] Недостатками известного способа являются большие затраты времени и средств на освоение скважины, связанные со спуском колонных обсадных труб, ее цементажа. Кроме того, интервалы исследования пластоиспытателя и пробной эксплуатации часто не совпадают, что вызывает невозможность сопоставления результатов исследования и даже потерю продуктивного горизонта и неоправданную ликвидацию скважины. A well-known method of well development, including drilling holes, identifying intervals of complications and promising formations, testing formations in an open wellbore, running and cementing the casing, its perforation, trial operation in the production string, industrial operation when discovering industrial reserves of oil and gas [2 ] The disadvantages of this method are the high cost of time and money for the development of the well associated with the descent of the casing pipe, its cementation. In addition, the intervals between the study of the reservoir tester and trial operation often do not coincide, which makes it impossible to compare the results of the study and even the loss of the productive horizon and unjustified well abandonment.

Техническим результатом предлагаемого изобретения является сокращение времени и средств на освоение скважин. The technical result of the invention is to reduce the time and money for well development.

Способ освоения скважин включает вскрытие пластов бурением, выявление интервалов осложнений и перспективных пластов, испытание пластов пластоиспытателем, проведение пробной эксплуатации, переход к промышленной эксплуатации при обнаружении промышленных запасов нефти и газа, причем, после выявления интервалов осложнений и перспективных пластов производят расширение диаметра скважин в этих интервалах, обсаживание экспандируемыми трубами, тампонирование твердеющей жидкостью их затрубного пространства, перфорацию экспандируемых труб в зоне перспективных пластов, при этом пакеры при испытании пластов пробной эксплуатации и промышленной эксплуатации устанавливают на одни и те же места внутри экспандируемых труб. The method of well development includes drilling holes, identifying complication intervals and promising formations, testing the formations with a test tester, conducting trial operation, switching to commercial operation when industrial reserves of oil and gas are detected, and after identifying intervals of complications and promising formations, the diameter of the wells is expanded in these intervals, casing with expandable pipes, plugging with hardening fluid of their annulus, perforation of expanding pipes promising formations in the zone, the packers when testing formations trial operation and commercial operation is set at the same place inside ekspandiruemyh pipes.

П р и м е р. Произвели вскрытие пластов бурением. Выявляют интервалы осложнений и перспективных пластов. Разрез разбуриваемой скважины был глубиной 4505 м, содержит зоны обвалов, поглощений в интервалах: 1503-1523 м, 1850-1862 м; 2275-2293 м, зоны нефтегазопроявлений в интервалах: 2125-2135 м, 4495-4505 м. Указанные интервалы в процессе бурения расширяют расширителем, имеющим диаметр 220 мм. В эти интервалы спускают экспандируемые трубы соответствующей длины и закачивают расчетное количество промывочной жидкости для расширения в диаметре до 190 мм экспандируемых труб, затем закачивают цементный раствор в затрубное пространство, после чего развальцовывателем шарошечного типа РШ-190 обрабатывают все спущенные перекрыватели. Интервалы с нефтегазопроявлением 2125-2135 м, 4496-4505 м последовательно перфорируют в средней части с количеством 50-ти отверстий на 1 м, а затем с помощью пластоиспытателей КИИ-2-146 испытывают на приток и восстановление давления. Из интервала 2125 м получают приток нефти с дебитом 3 м3/сут и с газовым фактором 5 м3/м3. При пробной эксплуатации в течение 1,5 сут получают дебит нефти при депрессии 50 атм 2 м3/сут c газовым фактором 4 м3/м3, затем переходят к испытанию последнего интервала 4495-4505 м. Сразу после этого проводят пробную эксплуатацию с интенсификацией компрессорным способом на трех режимах в течение 1,5 сут с установкой одного пакера на том же месте на 4490 м. Средний дебит притока составил 20 м3/сут, при средней депрессии 50 атм с газовым фактором 12 м3/м3 и с коэффициентом продуктивности 0,4 м3/сут.атм. Вслед за этим, не поднимая насосно-компрессорных труб и пакера, переводят пробную эксплуатацию в промышленную эксплуатацию, прекратив дальнейшее бурение этой скважины и исключив спуск эксплуатационной колонны.PRI me R. Produced by drilling. Intervals of complications and promising strata are identified. The section of the drilled well was 4505 m deep; it contains landslides and absorption zones in the intervals: 1503-1523 m, 1850-1862 m; 2275-2293 m, zones of oil and gas manifestations in the intervals: 2125-2135 m, 4495-4505 m. The indicated intervals during drilling are expanded with an expander having a diameter of 220 mm. Expandable pipes of appropriate length are lowered into these intervals and the calculated amount of flushing fluid is pumped to expand the expanded pipes to a diameter of 190 mm, then the cement mortar is pumped into the annulus, after which all the deflated shutters are processed with a cone-type flare gun RS-190. Intervals with an oil and gas manifestation of 2125-2135 m, 4496-4505 m are sequentially perforated in the middle part with the number of 50 holes per 1 m, and then with the help of reservoir test KII-2-146 they are tested for inflow and pressure restoration. From the interval of 2125 m, an oil inflow with a flow rate of 3 m 3 / day and with a gas factor of 5 m 3 / m 3 is obtained. During trial operation, oil production for 1.5 days is obtained with a depression of 50 atm 2 m 3 / day with a gas factor of 4 m 3 / m 3 , then they go on to test the last interval of 4495-4505 m. Immediately after that, trial operation is carried out with intensification by compressor in three modes for 1.5 days with the installation of one packer in the same place at 4490 m. The average flow rate was 20 m 3 / day, with an average depression of 50 atm with a gas factor of 12 m 3 / m 3 and with a coefficient productivity 0.4 m 3 / day.atm. Following this, without raising the tubing and packer, the trial operation is put into commercial operation, stopping further drilling of this well and excluding the descent of the production string.

Claims (1)

СПОСОБ ОСВОЕНИЯ СКВАЖИН, включающий вскрытие пластов бурением, выявление интервалов осложнений и перспективных пластов, испытание пластов пластоиспытателем, проведение пробной эксплуатации, переход к промышленной эксплуатации при обнаружении промышленных запасов нефти и газа, отличающийся тем, что после выявления интервалов осложнений и перспективных пластов производят расширение диаметра скважин в этих интервалах, обсаживание экспандируемыми трубами, тампонирование твердеющей жидкостью их затрубного пространства, перфорацию экспандируемых труб в зоне перспективных пластов, при этом пакеры при испытании пластов пробной эксплуатации и промышленной эксплуатации устанавливают на одни и те же места, внутри экспандируемых труб. METHOD FOR DEVELOPING WELLS, including drilling holes, identifying intervals of complications and promising formations, testing formations with a test tester, conducting trial operation, switching to commercial operation when industrial reserves of oil and gas are discovered, characterized in that, after identifying intervals of complications and promising formations, the diameter is expanded wells in these intervals, casing with expandable pipes, plugging with hardening fluid to their annulus, perforation pandiruemyh pipes zone promising layers, the packers when testing formations trial operation and commercial operation is set at the same place inside ekspandiruemyh pipes.
SU5034988 1992-03-31 1992-03-31 Borehole running in method RU2039214C1 (en)

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