SU956758A1

SU956758A1 - Device for interval-wise testing of a well

Info

Publication number: SU956758A1
Application number: SU802992666A
Authority: SU
Inventors: Евгений Васильевич Перекатов; Игорь Иванович Толокнов; Александр Иванович Сумароков
Priority date: 1980-10-16
Filing date: 1980-10-16
Publication date: 1982-09-07

Description

Изобретение относится к геологоразведочным работам, в частности к откачке и опробыванйю скважин на воду.The invention relates to exploration, in particular to pumping and testing wells for water.

.Известно устройство для освоения скважин на воду, включающее колонну бурильных труб, струйный насос с корпусом, снабженным обратным клапаном и штангу рабочего органа[11.A known device for the development of wells for water, including a drill pipe string, a jet pump with a housing equipped with a check valve and a rod of the working body [11.

Недостатком этого устройства является то, что в его конструкции нет пьезометрической трубки для замера динамического уровня во время откачки .The disadvantage of this device is that in its design there is no piezometric tube for measuring the dynamic level during pumping.

Известно также устройство для поин.тервального опробывания скважин, включающее корпус с каналами, гидравлический уплотнительный элемент, струй^·... ный насос, установленный на водоподающих трубах, полость которых связана 20 с полостью уплотнительного элемента и пьезометрическую трубку [2].A device is also known for the interval testing of wells, including a housing with channels, a hydraulic sealing element, a jet pump installed on water supply pipes, the cavity of which is connected 20 to the cavity of the sealing element and a piezometric tube [2].

Недостатком такого устройства является°то, что для оперативного замера динамического уровня и надеж- __ ности его работы при разобщении сква- жин устройство необходимо снабжать дополнительными приводными устройствами и исполнительными механизмами.The disadvantage of such a device is that for quick measurement of the dynamic level and the reliability of its operation when disconnecting wells, the device must be equipped with additional drive devices and actuators.

Цель изобретения - повышение на- , дежности работы устройства при раэоб· щении ствола скважины уплотнительным элементом с выпускным клапаном.The purpose of the invention is to increase the reliability of the device when working with a wellbore · by a sealing element with an exhaust valve.

Поставленная цель достигается тем, что корпус имеет упоры для фиксации устройства в водопроводящих трубах и толкатель, жестко связанный с пьезометрической трубкой, причем последняя установлена с возможностью осевого перемещения, а толкатель - с возможностью взаимодействия с выпускным клапаном уплотнительного элемента и упором.This goal is achieved by the fact that the housing has stops for fixing the device in the water pipes and a pusher rigidly connected to the piezometric tube, the latter being installed with the possibility of axial movement, and the pusher with the possibility of interaction with the exhaust valve of the sealing element and the stop.

С целью повышения надежности работы инструмента корпус снабжен шарнирными упорами, взаимодействующими с кольцевым упором нижнего наконечника водоподъемных труб и с фиксатором, связанным' концом пьезометрической трубки. Надежность работы повышается, если толкатель связан с фиксатором. Качество опробования водоносных горизонтов разной мощности в середине ствола скважины и изоляция их от нижней и верхней части скважины будет выше, если уплотнители связаны между собой каналом трубчатого удлинителя.In order to increase the reliability of the tool, the casing is equipped with articulated stops interacting with the ring stop of the lower tip of the water-lifting pipes and with a latch connected to the end of the piezometric tube. Reliability increases if the pusher is connected to the latch. The quality of testing aquifers of different thicknesses in the middle of the wellbore and isolating them from the lower and upper parts of the well will be higher if the seals are connected by a channel of a tubular extension.

На чертеже изображено устройство .для поинтервального опробования скважин, общий вид.The drawing shows a device. For interval testing wells, General view.

Устройство содержит колонну водоподъемных труб 1 с нижним наконечником 2, имеющим выступ 3, колонну водоподающих труб 4, корпус 5. с уплотнителем б, водоструйный насос 7, подпружиненные шарнирные упоры«8, 5 обратный 9 и выпускной 10 клапаны. ;В канал 11 корпуса 5 заведена пьезометрическая трубка-тяга 12 концомThe device comprises a column of water-lifting pipes 1 with a lower tip 2 having a protrusion 3, a column of water-supplying pipes 4, a housing 5. with a seal b, a water-jet pump 7, spring-loaded articulated stops "8, 5, return 9, and exhaust valves 10. ; In the channel 11 of the housing 5 a piezometric tube-rod 12 end

13. Канал 11 соединен со стволом скважины под уплотнителем 6 трубкой 1013. The channel 11 is connected to the wellbore under the seal 6 tube 10

14. На конце 13 пьезометрической трубки 12 посредством цилиндрического стакана 15 укреплен толкатель 16. К нижней части корпуса 5 посредством сменных удлинителей 17 крепится втулка5 18 с резиновым уплотнителем 19. Один из сменных удлинителей17 выполнен с каналом 20. Этот удлинитель ввертывается в резьбовые отверстия 21 и 22 корпуса 5 и втулки 18 и соединяет ка- « налом 20 уплотнители 6 и 19.14. At the end 13 of the piezometric tube 12, a pusher 16 is fixed by means of a cylindrical cup 15. A sleeve 5 18 with a rubber seal 19 is fastened to the lower part of the housing 5 by means of replaceable extensions 17. One of the replaceable extensions 17 is made with a channel 20. This extension is screwed into the threaded holes 21 and 22 of the housing 5 and the sleeve 18 and connects the channel 20 seals 6 and 19.

Устройство работает следующим образом.The device operates as follows.

Для опробования вскрытых при бурении водоносных пластов в скважину спускается водоподъемная колонна 1 с ²³нижним наконечником 2. Затем в водоподъемную колонну 1 на водоподающих трубах 4 спускается остальная часть инструмента, включающая водоструйный насос 7, пьезометрическую .трубку 12 ^0 и резиновые уплотнители 6 и 19 (при опробовании вскрытых при бурении непосредственно на забое водоносных пластов удлинители 17 вместе с корпусом 18 и уплотнителем 19 отсоединяются). 35 Резьбовое отверстие 21 закрывается резьбовой пробкой (на чертеже не показана).To test the aquifers uncovered during drilling, a water-lifting column 1 with ²³ lower tips 2 is lowered into the well. Then the rest of the tool, including a water-jet pump 7, a 12 ^ 0 piezometric tube and rubber seals 6 and 19, is lowered into the water-lifting column 1 on the water supply pipes 4. (when testing exposed during drilling directly on the bottom of the aquifers, the extenders 17 together with the housing 18 and the seal 19 are disconnected). 35 The threaded hole 21 is closed by a threaded plug (not shown in the drawing).

При спуске водоструйного насоса 7 с уплотнителем 6 под действием силы 40 тяжести пьезометрической трубки 12 стакан 15 опускается и.сводит упоры 8. Это способстввует беспрепятственному проходу инструмента через места соединения водоподъемных труб 1 муф- 45 тами (на чертеже не показаны). Выпускной клапан 10 при этом отжимается, сообщая резиновые уплотнители 6 со стволом скважины. При частичном выходе уплотнителя 6 из нижнего наконечника 2 пьезометрическую трубку 12 ³⁴поднимают за конец, выходящий на поверхность. При. этом стакан 15 поднимается и освобождает подпружиненные шарнирные упоры 8, которые расходятся и упираются в стенки водоподъемных 55 труб. При последующем спуске инст^ румента (пьезометрическую трубку 12 поддерживают в крайнем верхнем полсЯкении) инструмент встанет упорами 8 на кольцевой упор 3 наконечни- 60 ка 2. При подаче воды поверхностным буровым насосом с максимальной производительностью, последняя, за счет перепада давления жидкости в работающем струйном насосе 7, подается . 65 .через обратный клапан 9 и соответствующие каналы в уплотнитель 6.When lowering the water-jet pump 7 with seal 6 under the influence of gravity 40 of the piezometric tube 12, the cup 15 lowers and brings the stops 8. This contributes to the unhindered passage of the tool through the joints of the water pipes 1 by couplings 45 (not shown). The exhaust valve 10 is then squeezed, communicating the rubber seals 6 with the wellbore. With a partial exit of the seal 6 from the lower tip 2, the piezometric tube 12 ^{34 is} lifted beyond the end that extends to the surface. At. this glass 15 rises and releases the spring-loaded hinged stops 8, which diverge and abut against the walls of the water-lifting 55 pipes. During the subsequent descent of the tool (the piezometric tube 12 is supported in its extreme upper half), the tool will stand with stops 8 on the ring stop 3 of the tip 60 ka 2. When water is supplied by a surface mud pump with maximum productivity, the latter due to the difference in fluid pressure in the working jet pump 7 is supplied. 65. Through the check valve 9 and the corresponding channels into the seal 6.

Раздуваясь, уплотнитель 6 одновременно перекрывает кольцевые зазоры между корпусом 5 и наконечником 2 и между корпусом 5 и стенками скважины.Inflating, the seal 6 simultaneously overlaps the annular gaps between the housing 5 and the tip 2 and between the housing 5 and the walls of the well.

Для определения продуктивности |водоносных горизонтов разной мощности в средней части скважины к нижней части .корпуса 5 с помощью удлинителей 17 присоединяют втулку 18 с уплотнителем 19 (длина удлинителей подбирается исходя из мощности опробуемого горизонта и состояния водоупорных пород кровли и подошвы горизонта).To determine the productivity | of aquifers of different thicknesses in the middle part of the well, a sleeve 18 with a sealant 19 is attached to the lower part of the body 5 using extension cords 17 (the length of the extension cords is selected based on the thickness of the horizon being tested and the condition of the roof and base waterproof rocks).

Устройство спускается в скважину и устанавливается так, чтобы опробуемый пласт водоносного горизонта был между двух уплотнителей.The device descends into the well and is installed so that the tested aquifer is between two seals.

При работе струйного насоса одновременно раздуваются два уплотнителя б и 19 и изолируют исследуемый горизонт от притока воды из выше- и нижележащих горизонтов. После установки устройства включают буровой насос на поверхности и производят пробную откачку воды из исследуемого горизонта.During the operation of the jet pump, two gaskets b and 19 simultaneously inflate and isolate the studied horizon from the influx of water from the higher and lower horizons. After installation, the device includes a mud pump on the surface and produce a test pumping of water from the studied horizon.

Во время откачки воды через пьезометрическую трубку 12 наблюдают за . динамическим уровнем.При необходи'мости откачки воды из другого водоносного горизонта без подъема утсройства на поверхность пьезометрическую трубку 12 опускают.During pumping water through a piezometric tube 12 watch. dynamic level. If necessary, pumping water from another aquifer without lifting the device to the surface of the piezometric tube 12 is lowered.

При этом стакан 15 воздействует на упоры 8 и сводит их вместе. Одновременно упор 16 отжимает выпускной клапан 10 и тем самым выпускается во^ да из уплотнителей 6 и 19. После перестановки водоподъемных труб для изучения следующих водоносных горизонтов операции по подготовке устройства и откачке повторяются в указанной последовательности.In this case, the glass 15 acts on the stops 8 and brings them together. At the same time, the stop 16 presses the exhaust valve 10 and thereby releases water from the seals 6 and 19. After moving the water pipes to study the next aquifers, the operations for preparing the device and pumping are repeated in the indicated sequence.

При благоприятных условиях(ствол скважины не разработан ) откачку воды при помощи предлагаемого инструмента можно производить без водоподъемных труб. В этом случае, к струйному насосу присоединяют тонкостенный шланг (например из полиэтиленовой пленки), который при подъеме по нему воды распрямляется и обжимает находящиеся в скважине трубы.„Проходное сечение скважины для воды практически не изменяется, а следовательно сохраняется пропускная способность ство-« ла скважины для воды.Under favorable conditions (the wellbore has not been developed), water can be pumped out using the proposed tool without water pipes. In this case, a thin-walled hose (for example, from a polyethylene film) is attached to the jet pump, which straightens up and compresses the pipes located in the well when it rises through the water. “The flow cross section of the well for water is practically unchanged, and therefore the throughput is preserved” water wells.

Ожидаемый годовой экономический эффект от использования предлагаемого устройства составит 1,5-2,0 тыс.рублей .The expected annual economic effect from the use of the proposed device will be 1.5-2.0 thousand rubles.

Claims

The invention relates to exploration work, in particular to pumping and testing wells for water. A device is known for the development of water wells, including a string of drill pipes, a jet pump with a casing, equipped with a check valve and a bar of the operating element 1J. A disadvantage of this device is that in its design there is no piezometric tube for measuring the dynamic level during pumping. It is also known a device for poi. testing of wells, including a housing with channels, a hydraulic sealing element, a jet pump installed on water supply pipes, the cavity of which is connected to the cavity of the sealing element and the piezometer tube 2. A disadvantage of such a device is that and the reliability of its operation when disconnecting the wells, the device must be supplied with additional actuators and actuators. The purpose of the invention is to improve the reliability of the device when the wellbore is broken by a sealing element with an exhaust valve. The goal is achieved by the fact that the housing has stops for fixing the device in water supply pipes and a pusher rigidly connected with the piezometric tube, the latter being installed with the possibility of axial movement, and the pusher with the possibility of interaction with the outlet valve of the sealing element and the stop , In order to increase the reliability of the instrument operation, the housing is equipped with hinged lugs interacting with the annular stop of the lower tip of the lifting pipes and with the lock connected by the end of the piezometer chesky tube. Reliability is improved if the tappet is connected to the latch. The quality of sampling of aquifers of different thickness in the middle of the wellbore and their isolation from the lower and upper part of the well will be higher if the seals are interconnected by a tubular extension channel. - The drawing shows the device. For interval testing of wells, a general view. The device comprises a column of water-lifting pipes 1 with a lower tip 2 having a protrusion 3, a column of water supply pipes 4, housing 5, with a compactor b, a water-jet pump 7, spring-loaded articulated supports 8, a return 9 to the exhaust U valves. The iB channel 11 of the housing 5 is driven by a piezometric tube with a ha 12 end 13. A channel 11 is connected to the well bore under the seal 6 by a tube 14. At the end 13 of the piezometric tube 12, the push rod 16 is fixed to the lower part of the housing 5 by interchangeable extension cords 17 is fastened with a sleeve 18 with a rubber seal 19. One of the interchangeable extenders 17 is provided with a channel 20. This extension cuts into the threaded holes 21 and 22 of the housing 5 and the sleeves 18 and connects the bushing 20 to the seal 20 and 19. The device works as follows . To test the aquifers that were opened during the drilling of the aquifers, the water column 1c with the lower tip 2 is lowered into the well. Then, the remaining part of the tool, including the water jet pump 7, piezometric tube 12 and rubber seals 6 and 19, descends into the water column 1 on the water supply pipes 4. when testing the aquifers opened during drilling directly at the bottom of the aquifers, the extenders 17 together with the housing 18 and the compactor 19 are disconnected). The threaded hole 21 is closed by a threaded plug (not shown). couplings (not shown in the drawing). The exhaust valve 10 is then pressed together rubber seals b with the wellbore. With a partial exit of the compactor b from the lower tip 2, the piezometric tube 12 is lifted out of the end coming to the surface. At the same time, the cup 15 rises and releases the spring-loaded hinged lugs 8, which diverge and abut against the walls of the lifting pipes. During the subsequent descent of the instrument, the piezometric tube 12 is supported in the extreme upper half of the link) the tool will rest by the stops 8 on the ring stop 3 tips

2. When water is supplied by a surface drilling pump with a maximum capacity, the latter, due to the differential pressure of the fluid in the running jet pump 7, is supplied. Through the check valve 9 and the corresponding channels in the seal b. Having inflated, the seal b simultaneously closes the annular gaps between the housing 5 and the tip 2 and between the housing 5 and the walls of the well. To determine the productivity of AQUEOUS horizons of different thickness in the middle part of the well, a sleeve 18 with a seal 19 is attached to the lower part of the housing 5 using extenders 17 (the length of the extenders is selected based on the thickness of the tested horizon and the condition of the waterproof rocks of the roof and the base). The device is lowered into the well and installed so that the aquifer under test is between two seals. When the jet pump is in operation, two seals B and 19 are simultaneously inflated and isolate the studied horizon from the inflow of water from the upper and lower horizons. After the device has been installed, the mud pump is turned on at the surface and a test pumping of water from the studied horizon is performed. During the outflow of water, the piezometric tube 12 is monitored. dynamic level. If necessary, pumping water from another aquifer without lifting the device to the surface piezometric tube 12 is lowered. In this case, the glass 15 acts on the stops 8 and brings them together. At the same time, the anvil 16 pushes the exhaust valve 10 and thereby is released. Yes, from seals b and 19. After rearranging the lifting pipes to study the following aquifers, the operations on preparing the device and pumping out are repeated in the sequence indicated. Under favorable conditions (the borehole has not been developed), water can be pumped out using the proposed tool without water lifting pipes. In this case, a thin-walled hose (e.g., a polyethylene film) is attached to the jet pump, which, when it rises through water, straightens and compresses the pipes in the well. The borehole cross section for water remains almost unchanged, and therefore the capacity of the wellbore water is maintained. The expected annual economic effect from the use of the proposed device will be 1.5-2.0 thousand rubles. . Claims of the Invention — A device for interval testing of wells, including a housing