RU2039214C1 - Способ освоения скважин - Google Patents
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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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Abstract
Использование: в горной промышленности, а именно при освоении нефтяных и газовых скважин. Обеспечивает сокращение затрат и времени. Сущность способа: способ включает вскрытие пластов бурением. Выявляют интервалы осложнений и перспективных пластов. Затем осуществляют испытание пластов пластоиспытателями. Проводят пробную эксплуатацию и переходят на промышленную эксплуатацию. Это осуществляют при обнаружении промышленных запасов нефти и газа. После выявления интервалов осложнений и перспективных пластов производят расширение диаметра скважины в этих интервалах. Обсаживают экспандируемыми трубами. Тампонируют твердеющей жидкостью их затрубное пространство. Осуществляют перфорацию экспандируемых труб в зоне перспективных пластов. Пакеры при испытании пластов пробной эксплуатации промышленной эксплуатации устанавливают в одни и те же места. Их устанавливают внутри экспандируемых труб.
Description
Изобретение относится к горной промышленности, а именно к освоению нефтяных и газовых скважин.
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.
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.
Техническим результатом предлагаемого изобретения является сокращение времени и средств на освоение скважин.
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.
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.
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5034988 RU2039214C1 (ru) | 1992-03-31 | 1992-03-31 | Способ освоения скважин |
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| Application Number | Priority Date | Filing Date | Title |
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| SU5034988 RU2039214C1 (ru) | 1992-03-31 | 1992-03-31 | Способ освоения скважин |
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| SU5034988 RU2039214C1 (ru) | 1992-03-31 | 1992-03-31 | Способ освоения скважин |
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| US6470966B2 (en) | 1998-12-07 | 2002-10-29 | Robert Lance Cook | Apparatus for forming wellbore casing |
| US6557640B1 (en) | 1998-12-07 | 2003-05-06 | Shell Oil Company | Lubrication and self-cleaning system for expansion mandrel |
| US6568471B1 (en) | 1999-02-26 | 2003-05-27 | Shell Oil Company | Liner hanger |
| US6575250B1 (en) | 1999-11-15 | 2003-06-10 | Shell Oil Company | Expanding a tubular element in a wellbore |
| US6575240B1 (en) | 1998-12-07 | 2003-06-10 | Shell Oil Company | System and method for driving pipe |
| US6604763B1 (en) | 1998-12-07 | 2003-08-12 | Shell Oil Company | Expandable connector |
| US6634431B2 (en) | 1998-11-16 | 2003-10-21 | Robert Lance Cook | Isolation of subterranean zones |
| US6640903B1 (en) | 1998-12-07 | 2003-11-04 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| US6712154B2 (en) | 1998-11-16 | 2004-03-30 | Enventure Global Technology | Isolation of subterranean zones |
| US6725919B2 (en) | 1998-12-07 | 2004-04-27 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| US6745845B2 (en) | 1998-11-16 | 2004-06-08 | Shell Oil Company | Isolation of subterranean zones |
| US6823937B1 (en) | 1998-12-07 | 2004-11-30 | Shell Oil Company | Wellhead |
| US6892819B2 (en) | 1998-12-07 | 2005-05-17 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| US6968618B2 (en) | 1999-04-26 | 2005-11-29 | Shell Oil Company | Expandable connector |
| US6976541B2 (en) | 2000-09-18 | 2005-12-20 | Shell Oil Company | Liner hanger with sliding sleeve valve |
| US7011161B2 (en) | 1998-12-07 | 2006-03-14 | Shell Oil Company | Structural support |
| US7048067B1 (en) | 1999-11-01 | 2006-05-23 | Shell Oil Company | Wellbore casing repair |
| US7055608B2 (en) | 1999-03-11 | 2006-06-06 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| US7100684B2 (en) | 2000-07-28 | 2006-09-05 | Enventure Global Technology | Liner hanger with standoffs |
| US7100685B2 (en) | 2000-10-02 | 2006-09-05 | Enventure Global Technology | Mono-diameter wellbore casing |
| US7121352B2 (en) | 1998-11-16 | 2006-10-17 | Enventure Global Technology | Isolation of subterranean zones |
| US7168499B2 (en) | 1998-11-16 | 2007-01-30 | Shell Oil Company | Radial expansion of tubular members |
| US7168496B2 (en) | 2001-07-06 | 2007-01-30 | Eventure Global Technology | Liner hanger |
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1992
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