FR2280807A1 - Double-acting hydraulic oil well pump - with spool valve sliding on rod joining two pump pistons - Google Patents

Double-acting hydraulic oil well pump - with spool valve sliding on rod joining two pump pistons

Info

Publication number
FR2280807A1
FR2280807A1 FR7523988A FR7523988A FR2280807A1 FR 2280807 A1 FR2280807 A1 FR 2280807A1 FR 7523988 A FR7523988 A FR 7523988A FR 7523988 A FR7523988 A FR 7523988A FR 2280807 A1 FR2280807 A1 FR 2280807A1
Authority
FR
France
Prior art keywords
spool valve
double
pump
oil well
hydraulic oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7523988A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of FR2280807A1 publication Critical patent/FR2280807A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/115—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by two single-acting liquid motors, each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L17/00—Slide valve-gear or valve arrangements with cylindrical, sleeve, or part annularly-shaped valves surrounding working cylinder or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L23/00—Valves controlled by impact by piston, e.g. in free-piston machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
    • F04B47/08—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A hydraulically operated double-acting oil well pump has a spool valve which can slide on a rod joining two pump pistons. The spool valve directs the power fluid in turn below the upper piston for an up stroke and above the lower piston for a down stroke. The optimum timing for the double-acting pumping cycle results in the best possible efficiency. Longer service life of the moving parts is combined with greater functional reliability and easy mfr. The greatest possible piston dia. can be accommodated in a given casing size.
FR7523988A 1974-08-02 1975-07-31 Double-acting hydraulic oil well pump - with spool valve sliding on rod joining two pump pistons Withdrawn FR2280807A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49410474A 1974-08-02 1974-08-02

Publications (1)

Publication Number Publication Date
FR2280807A1 true FR2280807A1 (en) 1976-02-27

Family

ID=23963056

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523988A Withdrawn FR2280807A1 (en) 1974-08-02 1975-07-31 Double-acting hydraulic oil well pump - with spool valve sliding on rod joining two pump pistons

Country Status (4)

Country Link
JP (1) JPS5138104A (en)
BR (1) BR7504939A (en)
DE (1) DE2533835A1 (en)
FR (1) FR2280807A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5104296A (en) * 1990-09-04 1992-04-14 Roeder George K Engine end for a downhole hydraulically actuated pump assembly
CN104405630B (en) * 2014-11-21 2016-06-01 刘运林 Hydraulic double-acting Rodless oil extraction pump
CN110541809B (en) * 2019-09-06 2024-06-04 大连虹桥科技有限公司 Double-acting oil pump capable of being filled with oil capable of being drained

Also Published As

Publication number Publication date
BR7504939A (en) 1976-07-27
JPS5138104A (en) 1976-03-30
DE2533835A1 (en) 1976-02-19

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Legal Events

Date Code Title Description
ST Notification of lapse