CN203476271U

CN203476271U - Ground hydraulic drilling jar for deep well and extra-deep well

Info

Publication number: CN203476271U
Application number: CN201320570774.9U
Authority: CN
Inventors: 慕武; 李银燕; 赵玉; 张纪智; 罗翔; 刘杨峰; 马本来; 王志晟; 刘玉成; 杨书逸
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-16
Filing date: 2013-09-16
Publication date: 2014-03-12
Anticipated expiration: 2023-09-16

Abstract

A ground hydraulic drilling jar for a deep well and an extra-deep well is mainly composed of a lifting sub, an upper hydraulic cylinder, an oil hole, a lower hydraulic cylinder, a piston, a pressure relieving hole, an upper sealing ring, a metal sealing ring, a lower beating rod, a middle sealing ring, a sealing set, a bearing ring, chain rings, a circulating connector, a circulating hole and a safe chain, the pressure relieving hole is drilled in the piston, the upper sealing ring and the metal sealing ring are arranged around the piston, the lower beating rod is in screwed connection with the piston, the lifting sub is in screwed connection with the upper hydraulic cylinder, the oil hole is formed in the upper portion of the upper hydraulic cylinder, the upper hydraulic cylinder and the lower hydraulic cylinder are in screwed connection, the screwed connection positions of the upper hydraulic cylinder and the lower hydraulic cylinder are sealed through the middle sealing ring, the connected lower beating rod and piston are put into the lower hydraulic cylinder from the lower face of the lower hydraulic cylinder, the sealing set is arranged in the lower hydraulic cylinder from the lower end of the lower beating rod in a sleeved mode and is jacked to a circular bead, the bearing ring is arranged on the lower beating rod in a sleeved mode, a buckled special tool hole is machined in the lower face of the bearing ring, screw threads between the bearing ring and the lower hydraulic cylinder are connected, the lower face of the lower beating rod is connected with the circulating connector through screw threads, the circulating hole is formed beside the circulating connector, the chain rings are arranged at the lower end of the lower hydraulic cylinder and on the circulating connector, and the safe chain is connected between the chain rings of the circulating connector and the lower hydraulic cylinder.

Description

Deep-well, ultradeep well ground hydraulic bumper jar

Technical field

The utility model relates to when oil drilling deep-well, ultradeep well generation lock of tool drilling and hits stuck point from underground, for unfreezing.

Background technology

The maximum tensile strength of on-the-spot conventional ground bumper jar only has 1500kN at present, and jarring force only has 870kN, and the flexible distance after its jarring only has 1200mm.For it it be only only applicable to stuck point at 1000m-2000m with middle-deep well shallow, that drilling tool gross weight is no more than 1500 kN.And need to hit stuck point so that hit instrument without suitable underground during unfreezing from underground when oil drilling deep-well, ultradeep well generation bit freezing, originally the lock of tool drilling that can remove at short notice causes complicated lock of tool drilling because can not effectively processing in time, both delay a large amount of drilling times, delayed again oil-gas exploration progress.

Summary of the invention

During for above-mentioned deep-well, ultradeep well bit freezing without the problem of the timely jarring releasing of suitable tools, the purpose of this utility model has aimed to provide a kind of deep-well, ultradeep well ground hydraulic bumper jar, this bumper jar according to be in have pulling force that the piston in liquid cylinder sleeve bears when adjustable, a certain amount of hydraulic oil is by draining hole draining arbitrarily at short notice, have principle that certain hour postpones and under while hitting bar free-falling jarring telescopic long distance reach the feature that 9m is many, solved deep-well, ultradeep well from the problem of ground jarring releasing.

The purpose of this utility model completes like this:

A kind of deep-well, ultradeep well ground hydraulic bumper jar, mainly by lifting sub, upper fluid cylinder, oil filler point, lower fluid cylinder, piston, relief hole, upper sealing ring, metallic packing ring, under hit bar, middle sealing ring, seal group, retainer ring, chain link, circulating connection, circulation port and theft-resistant link chain form, on piston, be drilled with relief hole, sealing ring and metallic packing ring are equipped with in the surrounding of piston, under hit between bar and piston with screwed connection, lifting sub and upper fluid cylinder screwed connection, the top of upper fluid cylinder has oil filler point, between upper fluid cylinder and lower fluid cylinder, also use screwed connection, sealing ring sealing in their screwed connection position use, hitting bar and piston under connecting, below lower fluid cylinder, fill in, the lower end of seal group being hit to bar from down packs in lower fluid cylinder pushes up to shoulder, again retainer ring is set to down and is hit on bar, below retainer ring, be processed with the special tool eyelet linking closely, connect the screw thread between retainer ring and lower fluid cylinder, under hit below bar and use screwed connection circulating connection, circulating connection side has circulation port, on the lower end of lower fluid cylinder and circulating connection, chain link is installed, between the chain link between circulating connection and lower fluid cylinder, be connected to theft-resistant link chain.

The beneficial effect of advantage of the present utility model and generation is:

1, the utility model is simple in structure, adopts conventional part assembling, is easy to processing, operates easy to use, safe and reliable.

2, after the success of the utility model field trial, in the time of can solving deep-well, ultradeep well bit freezing while applying, from underground, hit fast the problem of unfreezing, remove as early as possible lock of tool drilling, improve timeliness, cost-saving, the labour intensity that greatly reduces post workman, accelerate oil-gas exploration progress.

Accompanying drawing explanation

Fig. 1 is the utility model sectional view.

The specific embodiment

As shown in Figure 1, a kind of deep-well, ultradeep well ground hydraulic bumper jar, mainly by lifting sub 1, upper fluid cylinder 2, oil filler point 3, lower fluid cylinder 4, piston 5, relief hole 6, upper sealing ring 7, metallic packing ring 8, under hit bar 9, middle sealing ring 10, seal group 11, retainer ring 12, chain link 13, circulating connection 14, circulation port 15 and theft-resistant link chain 16 form, on piston 5, be drilled with relief hole 6, sealing ring 7 and metallic packing ring 8 are equipped with in the surrounding of piston 5, under hit between bar 9 and piston 5 with screwed connection, lifting sub 1 and the 2 use screwed connections of upper fluid cylinder, the top of upper fluid cylinder 2 has oil filler point 3, between upper fluid cylinder 2 and lower fluid cylinder 4, also use screwed connection, sealing ring 10 sealings in their screwed connection position use, hitting bar 9 under connecting, fill in below lower fluid cylinder 4 with piston 5, seal group 11 is hit to bar 9 lower end from down packs in lower fluid cylinder 4 top to shoulder, again retainer ring 12 is set to down and is hit on bar 9, below retainer ring 12, be processed with the special tool eyelet linking closely, connect the screw thread between retainer ring 12 and lower fluid cylinder 4, under hit bar 9 below with screwed connection circulating connection 14, circulating connection 14 sides have circulation port 15, on the lower end of lower fluid cylinder 4 and circulating connection 15, chain link 13 is installed, 13 of chain links between circulating connection 15 and lower fluid cylinder 4 are connected to theft-resistant link chain 16.

While hitting under generation lock of tool drilling needs, adjust tool joint and expose turntable surface, the rig tools such as seated slips, open the obstruction of oil filler point 3, till fluid cylinder being filled with from oil filler point 3 injection liquid force feeds, from lifting sub 1, mention deep-well, ultradeep well ground hydraulic bumper jar, circulating connection 14 is connected with drilling tool in well, take down theft-resistant link chain 16 and be sitting in the rig tools such as slips on well head, according under hit tonnage from lifting sub 1 fast upper extract press top jar to needing the tonnage of jarring to check brake lever, the lower end of upper fluid cylinder 2 is processed with and the complete hermetic one section of cylinder sleeve of piston 5, when piston 5 arrives the cylinder sleeve place of going up fluid cylinder 2, upper sealing ring 7 and metallic packing ring 8 have sealed the hydraulic oil path between upper and lower fluid cylinder, hydraulic oil pressurized under the effect of drilling tool weight in lower fluid cylinder 4, under solid or heavy wall, hit bar 9 and can not be extruded distortion, up fluid cylinder 2 is mobile through the relief hole 6 on piston 5 for the hydraulic oil of lower fluid cylinder 4 interior pressurizeds, along with the hydraulic oil in lower fluid cylinder 4 up flows in fluid cylinder 2, piston 5 slowly down moves down in fluid cylinder 4, when the cylinder sleeve in upper fluid cylinder 2 is passed through completely in the top of piston 5, compared with the slightly large upper fluid cylinder 2 of piston 5 diameters and lower fluid cylinder 4, be communicated with completely, piston 5, under hit bar 9 and fall with regard to fast free, the drilling tool weight momentary action of mentioning had both been done a jarring to the power of hitting under being produced one by bit freezing tool to stuck point.

A noticeable problem is: under upwards lift drilling tool while hitting tensile elongation fall the maximum jarring flexible distance of seal group 11 above time in the lower surface of piston 5 must be less than jarring time, prevent that the lower surface of piston 5 and 12 shocks of the retainer ring under seal group 11 from causing tool damage.

In jarring process, need to set up circulation time method:

Stop jarring operation, mention after producing the bumper jar of jarring or well head safe instrument such as seat good elevator etc. and in the circulation port 15 of circulating connection 14, connect a pipe nipple and union, and connect with hose, turn on pump both can be set up circulation.

Repeat the Program alternation operation by above jarring, circulation, until unfreezing.

Claims

1. a deep-well, ultradeep well ground hydraulic bumper jar, mainly by lifting sub (1), upper fluid cylinder (2), oil filler point (3), lower fluid cylinder (4), piston (5), relief hole (6), upper sealing ring (7), metallic packing ring (8), under hit bar (9), middle sealing ring (10), seal group (11), retainer ring (12), chain link (13), circulating connection (14), circulation port (15) and theft-resistant link chain (16) form, it is characterized in that being drilled with on piston (5) relief hole (6), sealing ring (7) and metallic packing ring (8) are equipped with in the surrounding of piston (5), under hit between bar (9) and piston (5) with screwed connection, lifting sub (1) and screwed connection for upper fluid cylinder (2), the top of upper fluid cylinder (2) has oil filler point (3), between upper fluid cylinder (2) and lower fluid cylinder (4), also use screwed connection, sealing ring (10) sealing in their screwed connection position use, hitting bar (9) under connecting, fill in below lower fluid cylinder (4) with piston (5), the lower end of seal group (11) being hit to bar (9) from down packs into the middle top of lower fluid cylinder (4) to shoulder, again retainer ring (12) is set to down and is hit on bar (9), below retainer ring (12), be processed with the special tool eyelet linking closely, connect the screw thread between retainer ring (12) and lower fluid cylinder (4), under hit bar (9) and use screwed connection circulating connection (14) below, circulating connection (14) side has circulation port (15), on the lower end of lower fluid cylinder (4) and circulating connection (15), chain link (13) is installed, between the chain link (13) between circulating connection (15) and lower fluid cylinder (4), be connected to theft-resistant link chain (16).