CN201843600U - SAGD (Steam Assisted Gravity Drainage) mechanical lifting circulating preheating equipment - Google Patents

SAGD (Steam Assisted Gravity Drainage) mechanical lifting circulating preheating equipment Download PDF

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Publication number
CN201843600U
CN201843600U CN2010206104711U CN201020610471U CN201843600U CN 201843600 U CN201843600 U CN 201843600U CN 2010206104711 U CN2010206104711 U CN 2010206104711U CN 201020610471 U CN201020610471 U CN 201020610471U CN 201843600 U CN201843600 U CN 201843600U
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CN
China
Prior art keywords
equipment
tubing string
horizontal
steam
protective casing
Prior art date
Application number
CN2010206104711U
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Chinese (zh)
Inventor
杨立强
杨建平
郑南方
丁亚军
孙建平
张喜瑞
Original Assignee
中国石油天然气股份有限公司
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Priority to CN2010206104711U priority Critical patent/CN201843600U/en
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Publication of CN201843600U publication Critical patent/CN201843600U/en

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Abstract

The utility model provides SAGD (Steam Assisted Gravity Drainage) mechanical lifting circulating preheating equipment which is applied to an intermediate casing of a horizontal well. The SAGD mechanical lifting circulating preheating equipment comprises a steam injection tube column, a mechanical lifting tube column and an oil well pump, wherein the steam injection tube column comprises a vertical section and a horizontal section, the vertical section is positioned at the vertical part of the intermediate casing, the horizontal section is positioned at the horizontal part of the intermediate casing, the steam is injected to a pitshaft of a horizontal well to realize the preheating of an oil layer through the tail end of the horizontal section, the mechanical lifting tube column is positioned at the vertical part of the intermediate casing, and the oil well pump is connected at the lower bottom end of the mechanical lifting tube column and is used for pumping the steam condensate water in the horizontal pump and the crude oil contained in the steam condensate water. The SAGD mechanical lifting circulating preheating equipment can solve the problem that as the pressure of the deep well or the strata is lower than the pressure of a well depth hydrostatic column, the circulating preheating of the oil layer can not be carried out.

Description

A kind of SAGD machinery lifting circulation pre-heating device
Technical field
The utility model is about the thickened oil recovery technology, and particularly about SAGD machinery lifting preheating technology, concrete will be about a kind of SAGD machinery lifting circulation pre-heating device.
Background technology
The in-place oil in some oil fields, because oil is thick and/or formation temperature is low, make crude oil flow difficulties in the stratum, at this part oilfield exploitation, carried out a large amount of development tests both at home and abroad, wherein SAGD (Stream AssistedGravity Drainage SAGD) exploitation method is a mature technique comparatively, and SAGD is a kind of thickened oil recovery mode, its technology is in the continuous steam injection of last horizontal well, and following horizontal well recovers the oil continuously.The SAGD exploitation method need be carried out preheating to oil reservoir in the reservoir exploitation initial start stage, and the pre-heating technique method generally has two kinds, and a kind of is cyclic steam stimulation method, a kind of for the circulation pre-heating mean.Cyclic steam stimulation method easily causes the oil reservoir preheating inhomogeneous, and the circulation pre-heating mean is lower than the situation of well depth liquid column hydrostatic pressure for deep-well or strata pressure, can not effectively carry out preheating.
The utility model content
The utility model provides a kind of SAGD machinery lifting circulation pre-heating device, is lower than the problem that the well depth liquid column hydrostatic pressure can not carry out oil reservoir circulation preheating to solve because of deep-well or strata pressure.
The utility model provides a kind of SAGD machinery lifting circulation pre-heating device, be applied in the protective casing of horizontal well, this equipment comprises: the steam injection tubing string, described steam injection tubing string comprises vertical section and horizontal segment, described vertical section is positioned at the vertical component of described protective casing, described horizontal segment is positioned at the horizontal component of described protective casing, and the end of described steam injection tubing string is realized the oil reservoir preheating to horizontal well pit shaft steam in jection; Machinery lifting tubing string is positioned at the vertical component of described protective casing; Oil well pump is connected the following bottom of described mechanical lifting tubing string, is used for extracting the crude oil that mixes in the steam condensate (SC) of horizontal well and the steam condensate (SC).
Useful technique effect of the present utility model: can solve because of deep-well or strata pressure and be lower than the problem that the well depth liquid column hydrostatic pressure can not carry out oil reservoir circulation preheating.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model embodiment SAGD machinery lifting circulation pre-heating device;
Fig. 2 is the cross sectional representation of the utility model embodiment SAGD machinery lifting circulation pre-heating device vertical component;
The ground suspension equipment structural representation of Fig. 3 the utility model embodiment SAGD machinery lifting circulation pre-heating device.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, the utility model embodiment is described in further details below in conjunction with accompanying drawing.At this, illustrative examples of the present utility model and explanation thereof are used to explain the utility model, but not as to qualification of the present utility model.
Fig. 1 is the structural representation of the utility model embodiment SAGD machinery lifting circulation pre-heating device; Be applied in the protective casing 101 of horizontal well, described equipment comprises: steam injection tubing string 102, mechanical lifting tubing string 103 and oil well pump 104.
Described steam injection tubing string 102 comprises vertical section 107 and horizontal segment 108, described vertical section 107 is positioned at the vertical component of described protective casing, described horizontal segment 108 is positioned at the horizontal component of described protective casing, and the end of described steam injection tubing string 102 is realized the oil reservoir preheating to horizontal well pit shaft steam in jection.
Preferably, the internal diameter 〉=40mm of described steam injection tubing string 102, external diameter≤89mm; The end of described horizontal segment 108 comprises terminal sieve 105, is used for the horizontal component steam in jection to described protective casing.
Fig. 2 is the cross sectional representation of the utility model embodiment SAGD machinery lifting circulation pre-heating device vertical component, the external diameter of the box cupling 201 of described steam injection tubing string 102 than the internal diameter of the horizontal component of described protective casing to 10mm when young, preferably, external diameter 〉=the 108mm of the box cupling 201 of described steam injection tubing string, described box cupling adopt two-way chamfering to connect.
Machinery lifting tubing string 103 is positioned at the vertical component of described protective casing; Preferably, described mechanical lifting tubing string 103 external diameters 〉=70mm, internal diameter 〉=62mm; To 10mm when young, the box cupling 202 of mechanical lifting tubing string 103 is approximately 89mm to the maximum outside diameter sum of the maximum outside diameter of described steam injection tubing string 102 and mechanical lift tube 103 posts than the internal diameter of the vertical component of described protective casing 101, and the utility model is not as limit.
Oil well pump 104 is connected the following bottom of described mechanical lifting tubing string, is used for extracting the crude oil that mixes in the steam condensate (SC) of horizontal well and the steam condensate (SC).The piston of described oil well pump 104 adopts the sucker rod on-off connector to be connected (not shown) with sucker rod 203.Preferably, the maximum outside diameter of described oil well pump 104 bodies and oil well pump box cupling all≤92mm, described box cupling adopts two-way chamfering to connect.
Further, described oil well pump 104 depth of setting L satisfy:
L≥H-100(P-1)
Wherein, H is oil reservoir vertical depth m, and P is strata pressure MPa.
In a preferable enforcement, the internal diameter 〉=220mm of the vertical component of described protective casing 101, the internal diameter 〉=178mm of the horizontal component of described protective casing.
Fig. 3 is the ground suspension equipment structural representation of the utility model embodiment SAGD machinery lifting circulation pre-heating device; Among Fig. 3,301 are the oil pipe outlet, and 302 is the steam inlet, and 303 is the casing annulus access, and 304 is polished rod, and 305 is polished rod sealer, and 306 is the rubber gate, and 307 is long-range hydraulic pressure blowout preventer.
Ground lifting equipment, adopt conventional pumping unit, its oil pumper manufacturing parameter to satisfy to be equal to the discharge capacity demand of annotating the vapour amount (as injection rate is 100t/d, the optional following combination of its oil pumper operational factor:
Table 1
Give one example below equipment of the present utility model be described:
The oil well in a certain oil field, adopt the preheating that circulates of this technology on November 23rd, 2008, stopped on March 31st, 09 to annotate, annotated vapour 130 days, the tired vapour 10029.9t that annotates, tired production fluid 12176.7t, tired produce oil 1902.6t annotates vapour discharge capacity 4.5t/h, and wellhead temperature is up to 170 ℃, the connected well section reaches 69%, pressure control production.It is normal to annotate vapour, lifting, gathering and transportation technology system works.
Simultaneously be lowered to this technology circulate preheating at first well group (upper and lower two mouthfuls of water horizontal wells) in September, 2009, and its creation data sees Table 2.
Parameter Design Actual
Day is annotated vapour (t) 72 67
The tired vapour (t) of annotating 14400 14419
Tired production fluid (t) 12960 12490
The accumulation production-injection ratio 0.9 0.87
Production normal phase production-injection ratio 0.9 0.92
Bottom hole temperature (BHT) (℃) >200 220
First well group result of the test shows that injection-production technology of the present utility model can design and can satisfy two horizontal well circulation preheating requirements, and from the reflection of temperature observation well data, horizontal segment temperature field is improved significantly.
Useful technique effect of the present utility model: can solve because of deep-well or strata pressure and be lower than the problem that the well depth liquid column hydrostatic pressure can not carry out oil reservoir circulation preheating.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (12)

1. SAGD machinery lifting circulation pre-heating device is applied to it is characterized in that in the protective casing of horizontal well that described equipment comprises:
The steam injection tubing string, described steam injection tubing string comprises vertical section and horizontal segment, described vertical section is positioned at the vertical component of described protective casing, and described horizontal segment is positioned at the horizontal component of described protective casing, and the end of described steam injection tubing string is realized the oil reservoir preheating to horizontal well pit shaft steam in jection;
Machinery lifting tubing string is positioned at the vertical component of described protective casing;
Oil well pump is connected the following bottom of described mechanical lifting tubing string, is used for extracting the crude oil that mixes in the steam condensate (SC) of horizontal well and the steam condensate (SC).
2. equipment as claimed in claim 1 is characterized in that, the end of described horizontal segment comprises terminal sieve, is used for the horizontal component steam in jection to described protective casing.
3. equipment as claimed in claim 1 is characterized in that, described oil well pump depth of setting L satisfies:
L≥H-100(P-1)
Wherein, H is the oil reservoir vertical depth, and P is a strata pressure.
4. equipment as claimed in claim 1 is characterized in that, the piston of described oil well pump adopts the sucker rod on-off connector to be connected with sucker rod.
5. equipment as claimed in claim 1 is characterized in that, steam injection tubing string maximum outside diameter and mechanical lifting tubing string maximum outside diameter sum than the internal diameter of the vertical component of described protective casing to 10mm when young.
6. equipment as claimed in claim 1 is characterized in that, the external diameter of the box cupling of described steam injection tubing string than the internal diameter of the horizontal component of described protective casing to 10mm when young.
7. equipment as claimed in claim 6 is characterized in that, described box cupling adopts two-way chamfering to connect.
8. as claim 1 or 5 described equipment, it is characterized in that the internal diameter 〉=220mm of the vertical component of described protective casing.
9. equipment as claimed in claim 5 is characterized in that, the maximum outside diameter 〉=70mm of described mechanical lifting tubing string, the internal diameter 〉=62mm of described mechanical lifting tubing string.
10. as claim 5 or 6 described equipment, it is characterized in that the internal diameter 〉=40mm of described steam injection tubing string.
11. equipment as claimed in claim 1 is characterized in that, the maximum outside diameter of oil well pump body and oil well pump box cupling all≤92mm.
12. equipment as claimed in claim 11 is characterized in that, described oil well pump box cupling adopts two-way chamfering to connect.
CN2010206104711U 2010-11-16 2010-11-16 SAGD (Steam Assisted Gravity Drainage) mechanical lifting circulating preheating equipment CN201843600U (en)

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Application Number Priority Date Filing Date Title
CN2010206104711U CN201843600U (en) 2010-11-16 2010-11-16 SAGD (Steam Assisted Gravity Drainage) mechanical lifting circulating preheating equipment

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518415A (en) * 2011-12-13 2012-06-27 中国石油天然气股份有限公司 Method for draining oil from fractured single horizontal well under gravity of force by using steam
CN102877798A (en) * 2012-10-19 2013-01-16 元路 Multi-tube coaxial tubing coupling
CN103603637A (en) * 2013-10-28 2014-02-26 中国石油天然气股份有限公司 Experimental device and system for exploiting super heavy oil by using gas assistant SAGD (Steam Assisted Gravity Drainage)
CN103615225A (en) * 2013-11-28 2014-03-05 中国石油天然气股份有限公司 Mid-depth layer oil reservoir double-horizontal-well equal-temperature-difference forced steam circulation preheating method
WO2015077954A1 (en) * 2013-11-28 2015-06-04 中国石油天然气股份有限公司 Method for isothermal differential forced steam cyclic pre-heating for twin horizontal wells of mid-depth layer of oil reservoir
CN105422086A (en) * 2015-12-08 2016-03-23 中国石油天然气股份有限公司 Steam absorption profile acquiring method and device
CN105756644A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Preheating method applied before oil production adopting double horizontal wells and oil production method adopting double horizontal wells

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518415A (en) * 2011-12-13 2012-06-27 中国石油天然气股份有限公司 Method for draining oil from fractured single horizontal well under gravity of force by using steam
CN102518415B (en) * 2011-12-13 2015-07-08 中国石油天然气股份有限公司 Method for draining oil from fractured single horizontal well under gravity of force by using steam
CN102877798A (en) * 2012-10-19 2013-01-16 元路 Multi-tube coaxial tubing coupling
CN103603637A (en) * 2013-10-28 2014-02-26 中国石油天然气股份有限公司 Experimental device and system for exploiting super heavy oil by using gas assistant SAGD (Steam Assisted Gravity Drainage)
CN103603637B (en) * 2013-10-28 2016-08-31 中国石油天然气股份有限公司 The experimental provision of a kind of gas auxiliary SAGD exploitation super-viscous oil and system
CN103615225A (en) * 2013-11-28 2014-03-05 中国石油天然气股份有限公司 Mid-depth layer oil reservoir double-horizontal-well equal-temperature-difference forced steam circulation preheating method
WO2015077954A1 (en) * 2013-11-28 2015-06-04 中国石油天然气股份有限公司 Method for isothermal differential forced steam cyclic pre-heating for twin horizontal wells of mid-depth layer of oil reservoir
CN105756644A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Preheating method applied before oil production adopting double horizontal wells and oil production method adopting double horizontal wells
CN105756644B (en) * 2014-12-17 2018-09-04 中国石油天然气股份有限公司 Pre-heating mean before dual horizontal well oil recovery and dual horizontal well oil production method
CN105422086A (en) * 2015-12-08 2016-03-23 中国石油天然气股份有限公司 Steam absorption profile acquiring method and device
CN105422086B (en) * 2015-12-08 2018-08-10 中国石油天然气股份有限公司 Steam entry profile acquisition methods and device

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Granted publication date: 20110525