SU983310A1

SU983310A1 - Well sucker rod pump

Info

Publication number: SU983310A1
Application number: SU813324690A
Authority: SU
Inventors: Владимир Константинович Шарапинский; Анатолий Яковлевич Литвинов; Владимир Григорьевич Ишханов; Борис Владимирович Ефименко; Виктор Арамович Власов
Original assignee: Научно-производственное объединение по термическим методам добычи нефти "Союзтермнефть"
Priority date: 1981-07-22
Filing date: 1981-07-22
Publication date: 1982-12-23

Description

(54) СКВАЖЙННЫЙ ШТАНГОШЙ НАСОС(54) WELL CUTTER PUMP

Изобретение относитс к области насосостроени , касаетс скважинных штанговых насосов и может найти применение в народном хоз йстве при эксплуатации скважин- с газонасыщенг ными текучими средами.The invention relates to the field of pump construction, relates to well pumping pumps and can be applied in the national economy in the operation of wells with gas-saturated fluids.

Известен скважинный штанговый насос, содержащий цилиндр, в полости которого установлен полый плунжер с обводным каналом, выведенным в полую штанговуа колонну, и поплавковым клапаном I.Known downhole sucker rod pump, containing a cylinder, in the cavity of which is installed a hollow plunger with a bypass channel, derived in a hollow rod column, and a float valve I.

Недостатком известного насоса вл етс то, что из-тза недостаточности веса поплавкового клапана он может зависать на седле под действием дав лени газа со стороны подплунжерной полости. Это приводит к тому, что не обеспечиваетс надежное ртравливание газа из этой полости, уменьшаетс коэффициент ее заполнени и, как следствие,, снижаетс эффективность работы насоса.The disadvantage of the known pump is that, due to the insufficient weight of the float valve, it can hang on the seat due to the pressure of the gas from the side of the sub-plunger cavity. This leads to the fact that the gas is not reliably vented from this cavity, its filling ratio is reduced, and, as a result, the efficiency of the pump is reduced.

Целью изобретени вл етс повышение эффективности работы насоса.The aim of the invention is to increase the efficiency of the pump.

Дл достижени цели поплавковый клапан установлен в полости плунжера и снабжен охватывающим его плавающим пор йнем, мекхцтл проходное ртверстие , расположенное с возможностью перекрыти его поплавковым клапаном.To achieve the goal, a float valve is installed in the cavity of the plunger and provided with a floating valve that surrounds it, a mech hole that is positioned with the possibility of blocking it with a float valve.

-На чертеже представлен насос,.-The drawing shows the pump.

Насос содержит цилиндр 1, в полости 2 которого установлен нолый плунжер 3 с обводным каналом 4, выведенным 6 полую штанговую колонну 5, и поплавковым клапаном 6. Поплавковглй клапан б установлен вполости 2 плунжера 3 и снабжен охватывакмцим его плавающим поршнем 7, имеющим проходное отверстие 8, расположенное с возможностью перекрыти его поплавковым клапаном 6. Рабоча полость 9 насоса снабжена всасывающим и нагнетательным клапанами 10 и 11 соответственно. Прследний установлен на выходе из полости 9 в колонну подъемюлх труб 12.Поплавковый клапан 6 взаимодей20 ствует с седлом 13.The pump contains a cylinder 1, in the cavity 2 of which is installed a new plunger 3 with a bypass channel 4, led 6 hollow rod column 5, and a float valve 6. A float valve b is installed in the cavity 2 of the plunger 3 and is equipped with a floating piston 7, having a through hole 8 located with the possibility of blocking it with a float valve 6. The working cavity 9 of the pump is equipped with suction and discharge valves 10 and 11, respectively. The track is installed at the outlet of cavity 9 into the column of lifting pipes 12. The float valve 6 interacts with the seat 13.

Claims

The pump is lowered into the well under the dynamic level of the gas-saturated fluid. As the plunger 3 moves upward, the suction valve opens and the gas-saturated liquid enters the working cavity 9. When the plunger 3 moves downward, the pumped liquid is forced out of the cavity 9 through the inert valve and outwardly to the surface of the lifting pipes 12. In the process of pumping liquid, gas is released from it, which accumulates in the upper part of cavity 9. During the suction stroke, the gas-liquid interface decreases due to gas expansion and, with a slight decrease in the liquid level, the float valve b is separated. also floating piston 7, which by its weight t does not have a float valve b down. Through the bypass channel 4 opened in the plunger 3, the gas is vented from the cavity 9 into the rod string 5. The liquid level in the cavity 9 rises, and after it reaches the float valve b, the latter floats, abuts against the shoulders of the plunger 7 and overlaps an orifice 8. A pressure differential occurs on the piston 7 caused by an overpressure in the cavity 9, and the piston 7 together with the float valve b rises until after the children do not go to the seat 13. After that, the cycle of operation is repeated. Due to the fact that the separation of the float valve b from the seat 13 occurs under the action of the weight of the floating piston 7, the reliability of valve b and the efficiency of the pump as a whole increase. Invention Formula A borehole sucker-rod pump containing a cylinder, in the cavity of which a hollow plunger is installed, with an outlet duct brought into a hollow sucker rod column and a float valve. a piston having a bore, which is located with the possibility of blocking it with a float valve. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 436170, cl. F 04 B 47/00, 1973.