CN203978378U - Grey instrument is squeezed in a kind of packing - Google Patents

Grey instrument is squeezed in a kind of packing Download PDF

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Publication number
CN203978378U
CN203978378U CN201420414147.0U CN201420414147U CN203978378U CN 203978378 U CN203978378 U CN 203978378U CN 201420414147 U CN201420414147 U CN 201420414147U CN 203978378 U CN203978378 U CN 203978378U
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China
Prior art keywords
grey
crowded
pipe
instrument
hole
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Application number
CN201420414147.0U
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Chinese (zh)
Inventor
苏德胜
陈碧波
陈元虎
魏秀乾
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China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
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China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
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Priority to CN201420414147.0U priority Critical patent/CN203978378U/en
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Publication of CN203978378U publication Critical patent/CN203978378U/en
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Abstract

The utility model relates to sidetracked hole in sleeve in oil field and hangs the special-purpose crowded grey instrument of tail pipe superposition section, be particularly related to a kind of packing and squeeze grey instrument, the crowded grey hole pipe nipple that comprises the hollow tubular of the unlimited lower end closed in upper end being set in pit shaft, pipe nipple upper end, described crowded grey hole is provided with the interior drilling rod button being connected with drilling rod, the circumferential side wall of pipe nipple middle and lower part, described crowded grey hole is provided with for being communicated with the some crowded grey hole of hollow tube and tube outer shaft wall annular space, pipe nipple lower end, described crowded grey hole is fixedly connected with hollow tubular by drilling rod button and squeezes ash pipe, described crowded ash pipe lower end union tail hanger, described crowded ash pipe middle and upper part periphery is provided with some and righting-oriented bar one shaft in wall matched in clearance, the crowded grey instrument periphery of described righting strip one downside is provided with seal section and the guide section being connected with the overlay segment inner wall sealing of extension hanger.Grey instrument is squeezed in the special use of this structure, and it is high that simple in structure, reliable, crowded ash is constructed into power.

Description

Grey instrument is squeezed in a kind of packing
Technical field
The utility model relates to the crowded grey instrument of special use that sidetracked hole in sleeve in oil field (large well workover) hangs tail pipe superposition section horn mouth place, and particularly grey instrument is squeezed in a kind of packing.
Background technology
It is important technical measures that realize old filed transformation Remaining Oil, improve oil recovery rate and development benefit that CST and casing damaged well hang small casing renovation technique technology.
Even if the extension hanger tail pipe overlay segment cementing section with packing function is bad, also can guarantee completing smoothly of completion practice.But this structure will be 5 1/ 2" * 3.6 " (difficulty realizing in 4 ") SMALL HYDRAULIC LINER HANGER large (why), because being subject to the restriction of space structures radial dimension.
For many years, each elephant of the whole nation has been done much work as strengthened management for improving sidetracked hole cementing quality, the design of supervision construction party strict implement, controls wellbore trajectory, expands annular clearance, guarantee casing centralization, voltage stabilizing anti-channeling, controls annular pressure and prevents leakage, adopts micro-silicon low weight cement slurry, and take to improve after the well cementation completion technology measures that displacement efficiency etc. is suitable, sidetracked hole cementing quality is greatly improved generally.But due to odjective causes such as formation leakages, while causing small part well to hang drilling liner cementing, cement returns height not, and small casing sealing pressure testing is defective.
Rich 121 wells of Jiangsu oilfield side for example, on September 20th, 2013, the construction of suspension drilling liner cementing was normal, but on there is formation leakage while carrying central tube well-flushing, cause cement to return not high.Remedial measure: repeatedly squeeze after ash at hanger horn mouth, bobbin seal test is just qualified.
Drilling liner cementing overlay segment cementing quality is poor---and be mainly due to complicated geologic(al) factor, as: the cement that formation leakage etc. cause returns not high.The poor easy generation oil of overlay segment cementing quality, gas, water breakthrough, as there is the area of high pressure zone at some, overlay segment cementing quality is bad, and annular channeling often easily occurs.Had a strong impact on oil well and normally gone into operation, at overlay segment, remedied squeeze method, because there is no special tool, crowded grey success rate is lower, and repeatedly crowded grey expense is high.In prior art, for extension hanger horn mouth, squeeze the instrument that ash construction does not also have particularly preferred special use, site operation or squeezing ash with bridging plug packing need to remove tubing string twice, or adopt the general grey technique of squeezing, not bottoming plug, construction trouble, crowded grey weak effect.
Utility model content
The problem that the utility model exists for prior art, provides a kind of simple in structure, reliable, crowded ash to be constructed into the special-purpose packing for shutoff extension hanger horn mouth place that power is high and squeezes grey instrument.
The purpose of this utility model is to realize like this, grey instrument is squeezed in a kind of packing, the crowded grey hole pipe nipple that comprises the hollow tubular of the unlimited lower end closed in upper end being set in pit shaft, pipe nipple upper end, described crowded grey hole is provided with the interior drilling rod button being connected with drilling rod, the circumferential side wall of pipe nipple middle and lower part, described crowded grey hole is provided with for being communicated with the some crowded grey hole of hollow tube and tube outer shaft wall annular space, pipe nipple lower end, described crowded grey hole is fixedly connected with hollow tubular by drilling rod button and squeezes ash pipe, the described crowded ash pipe lower end extension hanger that is tightly connected, described crowded ash pipe middle and upper part periphery is provided with some and righting-oriented bar one shaft in wall matched in clearance, the crowded grey instrument periphery of described righting strip one downside is provided with seal section and the guide section being connected with the overlay segment inner wall sealing of extension hanger.
Grey instrument is squeezed in packing of the present utility model, squeezing grey hole pipe nipple is connected with drilling rod by interior drilling rod button, lower end and crowded ash pipe are linked and are connect by drilling rod, squeeze in ash construction, packer and the pit shaft of extension hanger downside are setting, from well head, transfer drilling rod, make to squeeze ash pipe and enter extension hanger horn mouth, after being hampered, drilling rod continues to press down drilling rod, making to squeeze ash pipe enters in extension hanger along guide section, and the seal section of crowded ash pipe and extension hanger inner wall sealing, while squeezing ash, ash oar injects and clamp-ons from squeezing grey hole the overlay segment realization well cementation shutoff of the extension hanger of ash pipe periphery from well head along drilling rod central passage, formation leakage with this place of shutoff.While adopting the novel packing of this practicality to squeeze grey instrument to squeeze ash manipulation, once squeeze grey shutoff success rate high, and crowded ash manipulation is simple, can effectively reduce the grey expense of squeezing, be particularly suitable for Remaining Oil in old filed transformation, to improve oil recovery rate and development benefit.
For ease of packing, squeeze under the smooth lower going-into-well of grey instrument, the crowded grey hole pipe nipple periphery wall of described crowded grey hole upside is provided with some and righting-oriented bar two well bore wall matched in clearance.
In order to prevent from squeezing, in grey process, grey oar is from squeezing grey hole backwash, and the axial direction downward with squeezing grey hole pipe nipple of the crowded grey Kong Kongxiang on the pipe nipple of described crowded grey hole is acute angle.
For further guaranteeing to squeeze ash pipe and the bell-mouthed positiver sealing of extension hanger, the instrument of preventing is lowered to and in process, damages horn mouth, near the crowded ash pipe periphery of described righting strip one downside be provided with for the close-fitting copper joint ring of extension hanger horn mouth.
For ease of guiding smoothly packing to squeeze the horn mouth that grey instrument is lowered to extension hanger, described crowded ash pipe lower end periphery is provided with the guide cone of axial shrinkage.
For ease of realizing the positiver sealing that squeezes ash pipe and extension hanger inwall, the crowded ash pipe periphery of described copper joint ring downside is provided with some roads sealing ring.
Accompanying drawing explanation
Fig. 1 is the structural representation that grey instrument is squeezed in packing of the present utility model.
Fig. 2 is for squeezing the structural representation of grey hole pipe nipple.
Fig. 3 is that Fig. 2 is at the sectional drawing at A-A place.
Fig. 4 is for squeezing the structural representation of ash pipe.
Fig. 5 is that Fig. 4 is at the structural representation at B-B place.
Wherein, 1 squeeze grey hole pipe nipple; 101 righting strips two; 102 squeeze grey hole; 2 pit shafts; 3 squeeze ash pipe; 301 righting strips one; 302 bronze medal joint rings; 303 sealing rings; 304 guide cones; 305 seal sections; 306 guide sections; 4 extension hangers.
The specific embodiment
As Figure 1-Figure 5, for grey instrument is squeezed in packing of the present utility model, the crowded grey hole pipe nipple 2 that comprises the hollow tubular of the unlimited lower end closed in upper end being set in pit shaft 2, squeeze pipe nipple 2 upper ends, grey hole and be provided with the interior drilling rod button being connected with drilling rod, this drilling rod upwards extends to well head always, the circumferential side wall of squeezing pipe nipple 2 middle and lower parts, grey hole is provided with for being communicated with the some crowded grey hole 102 of hollow tube and tube outer shaft wall annular space, squeeze pipe nipple 1 lower end, grey hole and be fixedly connected with the crowded ash pipe 3 of hollow tubular by drilling rod button, squeeze the ash pipe 3 lower ends extension hanger 4 that is tightly connected, squeeze ash pipe 3 middle and upper part peripheries and be provided with some and righting-oriented bar 1 pit shaft 1 inwall matched in clearance, the crowded grey instrument periphery of righting strip one 301 downsides is provided with seal section 305 and the guide section 306 being connected with the overlay segment inner wall sealing of extension hanger 4, for ease of packing, squeeze under the smooth lower going-into-well of grey instrument, crowded grey hole pipe nipple 1 periphery wall that squeezes grey hole 101 upsides is provided with some and righting-oriented bar 2 102 well bore wall matched in clearance, in order to prevent from squeezing, in grey process, grey oar is from squeezing grey hole 101 backwashes, and the crowded grey Kong Kongxiang axial direction downward with squeezing grey hole pipe nipple 1 squeezing on grey hole pipe nipple 1 is acute angle, for further guaranteeing to squeeze ash pipe 3 and the bell-mouthed positiver sealing of extension hanger 4, the instrument of preventing is lowered to and in process, damages horn mouth, near crowded ash pipe 3 peripheries of righting strip one 301 downsides be provided with for the close-fitting copper joint ring 302 of extension hanger 4 horn mouth, for ease of guiding smoothly packing to squeeze the horn mouth that grey instrument is lowered to extension hanger 4, squeeze the guide cone 304 that ash pipe 3 lower end peripheries are provided with axial shrinkage, for ease of realizing the positiver sealing that squeezes ash pipe 3 and extension hanger 4 inwalls, crowded ash pipe 3 peripheries of copper joint ring 302 downsides are provided with some roads sealing ring 304.
Grey instrument is squeezed in packing of the present utility model, squeezing grey hole pipe nipple 1 is connected with drilling rod by interior drilling rod button, lower end and crowded ash pipe 3 are linked and are connect by drilling rod, squeeze in ash construction, packer and the pit shaft 2 of extension hanger 4 downsides are setting, from well head, transfer drilling rod, make to squeeze the horn mouth place that ash pipe 3 enters extension hanger 4, after being hampered, drilling rod continues to press down drilling rod, the guide cone that squeezes ash pipe 3 is transferred along extension hanger, and make the seal section 304 that squeezes ash pipe 3 by sealing ring 303, realize sealing with extension hanger 4 inwalls, while squeezing ash, ash oar injects and clamp-ons from squeezing grey hole 101 the overlay segment realization well cementation shutoff of the extension hanger of ash pipe 3 peripheries from well head along drilling rod central passage, with shutoff formation leakage.Therefore while adopting the novel packing of this practicality to squeeze grey instrument to squeeze ash manipulation, once squeeze grey shutoff success rate high, and crowded ash manipulation is simple, can effectively reduce the grey expense of squeezing, be particularly suitable for Remaining Oil in old filed transformation, to improve oil recovery rate and development benefit.

Claims (6)

1. grey instrument is squeezed in a packing, it is characterized in that, the crowded grey hole pipe nipple that comprises the hollow tubular of the unlimited lower end closed in upper end being set in pit shaft, pipe nipple upper end, described crowded grey hole is provided with the interior drilling rod button being connected with drilling rod, the circumferential side wall of pipe nipple middle and lower part, described crowded grey hole is provided with for being communicated with the some crowded grey hole of hollow tube and tube outer shaft wall annular space, pipe nipple lower end, described crowded grey hole is fixedly connected with hollow tubular by drilling rod button and squeezes ash pipe, the described crowded ash pipe lower end extension hanger that is tightly connected, described crowded ash pipe middle and upper part periphery is provided with some and righting-oriented bar one shaft in wall matched in clearance, the crowded grey instrument periphery of described righting strip one downside is provided with seal section and the guide section being connected with the overlay segment inner wall sealing of extension hanger.
2. grey instrument is squeezed in packing according to claim 1, it is characterized in that, the crowded grey hole pipe nipple periphery wall of described crowded grey hole upside is provided with some and righting-oriented bar two well bore wall matched in clearance.
3. grey instrument is squeezed in packing according to claim 1, it is characterized in that, the axial direction downward with squeezing grey hole pipe nipple of the crowded grey Kong Kongxiang on the pipe nipple of described crowded grey hole is acute angle.
4. grey instrument is squeezed in packing according to claim 1, it is characterized in that, near the crowded ash pipe periphery of described righting strip one downside be provided with for the close-fitting copper joint ring of extension hanger horn mouth.
5. according to the packing described in claim 1-4 any one, squeeze grey instrument, it is characterized in that, described crowded ash pipe lower end periphery is provided with the guide cone of axial shrinkage.
6. according to the packing described in claim 1-4 any one, squeeze grey instrument, it is characterized in that, the crowded ash pipe periphery of described copper joint ring downside is provided with some roads sealing ring.
CN201420414147.0U 2014-07-25 2014-07-25 Grey instrument is squeezed in a kind of packing Active CN203978378U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420414147.0U CN203978378U (en) 2014-07-25 2014-07-25 Grey instrument is squeezed in a kind of packing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420414147.0U CN203978378U (en) 2014-07-25 2014-07-25 Grey instrument is squeezed in a kind of packing

Publications (1)

Publication Number Publication Date
CN203978378U true CN203978378U (en) 2014-12-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017028645A1 (en) * 2015-08-18 2017-02-23 山东大学 Anti-collapse two-way rib wing jet grouting drill, grouting consolidation system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017028645A1 (en) * 2015-08-18 2017-02-23 山东大学 Anti-collapse two-way rib wing jet grouting drill, grouting consolidation system and method
US11085244B2 (en) 2015-08-18 2021-08-10 Shandong University Anti-collapse jet grouting drill bit with bi-directional rib wings, grouting consolidation system and method

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