CN111841227A - High-pressure fine cyclone filtering and desanding system - Google Patents
High-pressure fine cyclone filtering and desanding system Download PDFInfo
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- CN111841227A CN111841227A CN202010741522.2A CN202010741522A CN111841227A CN 111841227 A CN111841227 A CN 111841227A CN 202010741522 A CN202010741522 A CN 202010741522A CN 111841227 A CN111841227 A CN 111841227A
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- sand
- desanding
- shell
- barrel
- filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
Abstract
The invention discloses a high-pressure fine rotational flow filtering and desanding system, which comprises a desanding unit, wherein the desanding unit comprises: a barrel; a cyclone desanding mechanism is formed inside the cylinder and used for separating gas, liquid and solid phases of the natural gas to be treated; the upper parts of the cylinder bodies of the basket type filtering mechanisms are connected; can dismantle basket sand receiving mechanism, can dismantle basket sand receiving mechanism includes first casing and dispose in the inside sand receiving barrel of first casing, first casing with the lower part of barrel links to each other. The system is suitable for well mouths with moderate sand-containing particle size and high sand removal particle size requirement; the sand grain removing efficiency of more than 5 mu m is as high as 99 percent; the detachable basket type sand collecting mechanism can adapt to the wellhead sand removal without flushing water; meanwhile, a clean water inlet and a clean water outlet are reserved for washing, so that fine cleaning can be realized, and the device is suitable for occasions with water.
Description
Technical Field
The invention relates to the technical field of high-pressure fine cyclone filtering desanding, in particular to a high-pressure fine cyclone filtering desanding system suitable for wellhead desanding under the condition of needing fine filtering and no flushing water.
Background
Along with the continuous deep exploitation of natural gas fields in China, the problem of sand production is getting more and more serious. Most of the desanding devices applied to the current market are foreign cyclone desanders or domestic devices with similar structures, and online high-pressure cleaning water is needed for sand discharge. The sand prevention and removal equipment provided by the existing pilot production device has poor adaptability, and meanwhile, the precision of downstream processing and metering equipment is higher and higher, so that fine sand with fine particles is inevitably required to be removed, and the safety performance is not influenced. Along with the gradual increase of the exploitation pressure, the problem of sand production is increasingly severe, and simultaneously, a plurality of wellheads do not have the high-pressure cleaning water condition, so that the high-pressure condition can be met, fine filtration can be provided, and the reasonable process of wellhead sand removal suitable for the condition that no flushing water exists at the wellheads is also urgently needed on site.
The gas well seriously produces sand, greatly influences the safe production of a ground process system, and a set of high-pressure fine rotational flow filtering and desanding device without flushing water and discharging sand is urgently needed to meet the perfection of a pilot production process.
Disclosure of Invention
The invention provides a high-pressure fine rotational flow filtering and desanding system. The gas well gas filter can effectively separate tiny solid particle substances in a gas well, can prevent downstream equipment from being damaged, and protects the safety performance of downstream processing equipment.
The invention provides the following scheme:
the utility model provides a fine whirl of high pressure filters sand removal system, includes the desanding unit, the desanding unit includes:
a barrel; a cyclone desanding mechanism is formed inside the cylinder and used for separating gas, liquid and solid phases of the natural gas to be treated;
the upper parts of the cylinder bodies of the basket type filtering mechanisms are connected; the basket type filtering mechanism is used for carrying out secondary filtering on the received gas-phase substances discharged by the rotational flow desanding mechanism;
the detachable basket type sand collecting mechanism comprises a first shell and a sand collecting barrel arranged in the first shell, and the first shell is connected with the lower part of the barrel; the sand collecting barrel is used for receiving the solid-phase materials discharged by the rotational flow sand removing mechanism so that the solid-phase materials are carried to the outside of the first shell when the sand collecting barrel is drawn out from the inside of the first shell.
Preferably: the cyclone desanding mechanism comprises an air inlet and a liquid outlet, and the liquid outlet is formed in the barrel.
Preferably: the basket type filtering mechanism comprises a second shell and a filtering barrel positioned in the second shell; the second shell is connected with the upper part of the barrel, an air outlet is formed in the second shell, and the air outlet and the liquid outlet are respectively connected with a downstream conveying main pipe.
Preferably: the second shell and the filter barrel are arranged in the same axial direction, the axial direction of the second shell and the horizontal plane form an included angle of 30-45 degrees, one end of the second shell, which is located at a high position, is opened so as to form an opening for the filter barrel to enter and exit, and a second quick-opening blind plate is formed at the opening; one end of the second shell located at the low position is closed and the air outlet is formed.
Preferably: an inlet pressure gauge is arranged on a pipeline connected with the gas source from the wellhead, and a differential pressure gauge is connected between the pipeline connected with the gas source from the wellhead and the pipeline connected with the gas outlet and the downstream conveying main pipe.
Preferably: and an outlet pressure gauge and a water filling and emptying interface are arranged on a pipeline connected with the liquid outlet and the downstream conveying main pipe.
Preferably: and a hydraulic sand washing interface and a liquid level meter interface are formed on the cylinder body.
Preferably: the first shell and the sand collecting barrel are arranged in the same axial direction, and the axial direction of the first shell and the horizontal plane form an included angle of 30-45 degrees.
Preferably: one end of the first shell, which is positioned at a high position, is opened so as to form an opening for the sand collecting barrel to enter and exit, and a first quick-opening blind plate is formed at the opening; the first shell is located one end of the low position and is sealed, and a reserved sand discharge port is formed.
Preferably: the system comprises two sets of the sand removing units which are connected in parallel.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
by the invention, a high-pressure fine cyclone filtering desanding system can be realized, and in one implementation mode, the system can comprise a desanding unit which comprises: a barrel; a cyclone desanding mechanism is formed inside the cylinder and used for separating gas, liquid and solid phases of the natural gas to be treated; the upper parts of the cylinder bodies of the basket type filtering mechanisms are connected; the basket type filtering mechanism is used for carrying out secondary filtering on the received gas-phase substances discharged by the rotational flow desanding mechanism; the detachable basket type sand collecting mechanism comprises a first shell and a sand collecting barrel arranged in the first shell, and the first shell is connected with the lower part of the barrel; the sand collecting barrel is used for receiving the solid-phase materials discharged by the rotational flow sand removing mechanism so that the solid-phase materials are carried to the outside of the first shell when the sand collecting barrel is drawn out from the inside of the first shell. The high-pressure fine cyclone filtering desanding system is suitable for a wellhead with moderate sand-containing particle size and high desanding particle size requirement; the sand grain removing efficiency of more than 5 mu m is as high as 99 percent; the detachable basket type sand collecting mechanism can adapt to the wellhead sand removal without flushing water; meanwhile, clear water is reserved to wash an inlet and an outlet, so that fine cleaning can be realized, and the device is suitable for occasions with water; the device is suitable for continuous separation of gas, liquid and sand with the pressure of the wellhead incoming gas up to 105 MPa; the rotational flow desanding mechanism is connected with the basket filter in series, and the protruding performance is high and fine in desanding efficiency except for independent completion and corresponding functions; the rotational flow desanding mechanism is connected with the basket filter in series, so that the overhaul frequency of a filter element of the basket filter is reduced to the maximum extent; the rotational flow sand removing mechanism and the basket filter can be used in series or independently. The desander used in series is generally used in gas wells requiring high desanding accuracy. The sand remover used independently can be used for extracting the filter element of the basket type filtering mechanism in a gas well with low sand removing requirement (less sand output of the gas well) or with the increase of the mining period and the reduction of sand output, namely the sand remover is suitable for being used as a rotational flow sand remover. The perfect combination of the mobile sand removing equipment with one use and one spare reduces the occupied area, and is convenient to operate and switch for use. The method can be applied to places such as natural gas single wells, shale gas single wells, treatment plants and the like.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a high-pressure fine cyclone filtering and desanding system provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a desanding unit provided by the embodiment of the invention.
In the figure: the device comprises a sand removing unit A, a sand removing unit B, a barrel body 1, a rotational flow sand removing mechanism 2, a basket type filtering mechanism 3, a second shell 31, a filtering barrel 32, a second quick-opening blind plate 33, a detachable basket type sand collecting mechanism 4, a first shell 41, a sand collecting barrel 42, a first quick-opening blind plate 43, an inlet pressure gauge 5, a pressure difference gauge 6, an outlet pressure gauge 7, an inlet emergency cut-off valve 8, a liquid level meter 9, an air inlet N1, a liquid discharge port N2, an air outlet N3, a water filling emptying interface N4, a hydraulic sand flushing interface N5, a liquid level meter interface N6 and a reserved sand discharge port N7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Examples
Referring to fig. 1 and 2, a high-pressure fine cyclone filtering desanding system provided by an embodiment of the present invention includes, as shown in fig. 1 and 2, a desanding unit, where the desanding unit includes:
a cylinder body 1; the cylinder 1 can connect the cyclone desanding mechanism and the detachable basket type sand collecting mechanism in series as a connecting piece. The barrel 1 is provided with a hydraulic sand washing interface N5 and a liquid level meter interface N6. A cyclone desanding mechanism 2 is formed inside the cylinder body 1, and the cyclone desanding mechanism 2 is used for separating gas, liquid and solid phases of natural gas to be treated; specifically, the swirling flow desanding mechanism 2 comprises an air inlet N1 and a liquid outlet N2, and the liquid outlet N2 is formed in the cylinder 1.
The basket type filtering mechanism 3 is connected with the upper part of the cylinder 1 of the basket type filtering mechanism 3; the basket type filtering mechanism 3 is used for carrying out secondary filtering on the received gas-phase substances discharged by the rotational flow desanding mechanism 2; the basket type filtering mechanism 3 comprises a second shell 31 and a filtering barrel 32 positioned in the second shell 31; the second shell 31 is connected with the upper part of the cylinder 1, an air outlet N3 is formed on the second shell 31, and the air outlet N3 and the liquid outlet N2 are respectively connected with a downstream conveying main pipe. The second shell 31 and the filter barrel 32 are arranged coaxially, the axial direction of the second shell 31 and the horizontal plane form an included angle (Q2) of 30-45 degrees, so that the filter barrel 32 is taken out of the second shell 31 conveniently, one end of the second shell 31 at a high position is opened to form an opening for the filter barrel to enter and exit, and a second quick-opening blind plate 33 is formed at the opening; the second housing 31 has the air outlet N3 sealed at its lower end. An inlet pressure gauge 5 is arranged on a pipeline connected with the gas source from the wellhead at the gas inlet N1, and a differential pressure gauge 6 is connected between a pipeline connected with the gas source from the wellhead at the gas inlet N1 and a pipeline connected with the gas outlet N3 and the downstream conveying main pipe. And an outlet pressure gauge 7 and a water filling emptying interface N4 are arranged on a pipeline connected with the liquid outlet N2 and a downstream conveying main pipe. The basket type filtering mechanism is required to be respectively provided with a differential pressure monitoring transmitter and an online differential pressure display instrument.
The sand collecting mechanism 4 comprises a first shell 41 and a sand collecting barrel 42 arranged inside the first shell 41, wherein the first shell 41 is connected with the lower part of the barrel 1; the sand collecting barrel 42 is used for receiving the solid-phase material discharged by the cyclone sand removing mechanism 2 so that the solid-phase material is carried to the outside of the first housing 41 when the sand collecting barrel 42 is drawn out from the inside of the first housing 41. The first shell 41 and the sand collecting barrel 42 are coaxially arranged, and the axial direction of the first shell 41 and the horizontal plane form an included angle (Q1) of 30-45 degrees. In order to facilitate the sand collecting barrel 42 to be taken out of the first shell, one end of the first shell 41 in the high position is opened so as to form an opening for the sand collecting barrel to get in and out, and a first quick-opening blind plate 43 is formed at the opening; one end of the first shell 41 at the low position is closed and is provided with a reserved sand discharge port N7.
In order to realize that the system does not stop to discharge solid-phase materials in the using process, the system comprises two sets of the desanding units which are connected in parallel. The sand removing unit is arranged in a spare mode, so that when one set of sand removing unit discharges solid-phase materials, the other set of sand removing unit can be started, and uninterrupted work is realized.
The following takes two sets of sand removing units as an example to describe in detail the specific implementation process of the system provided by the present application.
The system can comprise a sand removing unit A and a sand removing unit B which are used for one time and two sets of sand removing units for switching use. Each set of desanding unit comprises a basket type filtering mechanism, a rotational flow desanding mechanism, a detachable basket type sand collecting mechanism, an inlet pressure gauge, a liquid level meter, an outlet pressure gauge, a reserved water scouring port, a reserved sand discharging port, a reserved liquid discharging port, an irrigation emptying port, a gas delivery outlet and the like.
The desanding unit comprises an upper part, a middle part and a lower part, wherein the upper end is provided with a basket type filtering mechanism, the middle end is provided with a rotational flow desanding mechanism, and the lower end is provided with a detachable basket type sand collecting mechanism. The upper end basket type filtering mechanism is provided with a differential pressure gauge and an air outlet, and the upper end of the middle end cylinder body is provided with an air inlet, a reserved liquid outlet, a reserved water flushing port and a liquid level gauge port. The lower end is provided with a detachable basket type sand collecting mechanism and a reserved sand discharging opening. Detecting well mouth incoming gas through an inlet emergency shut-off valve and an inlet pressure gauge, enabling the incoming gas to enter a cyclone desanding mechanism of a desanding unit A, performing cyclone separation, enabling the gas phase to enter a basket type filtering mechanism of the desanding unit A from the upper end of a barrel body of the desanding unit A for secondary fine filtering, enabling the gas phase of the desanding unit A to flow out from a gas outlet of the basket type filtering mechanism, enabling a separated liquid phase to flow out from a reserved liquid discharge port at the lower end of the barrel body of the desanding unit A after sedimentation, enabling the gas phase and the liquid phase to join and then enter a header pipe to; and sand subsides through gravity and gets into sand removal unit A's removable basket sand collecting mechanism, closes this sand removal unit A's inlet and outlet valve when needing the sand discharge, opens sand removal unit B degritting, then opens the pressure release with the sand removal unit A that needs the sand discharge irrigation drain, observes sand removal unit A's export manometer reading to ordinary pressure, and the sand collecting bucket of sand removal unit A's removable basket sand collecting mechanism proposes the sand removal at last. When available cleaning water is available on site, the sand collecting barrel of the detachable basket type sand collecting mechanism of the sand removing unit A can be detached, high-pressure cleaning water is connected through the reserved hydraulic sand washing interface, and sand is washed away from the reserved sand discharging port. The system is recycled, and the whole system can continuously work.
The high-pressure fine cyclone filtering desanding system is suitable for a wellhead with moderate sand-containing particle size and high desanding particle size requirement; the sand grain removing efficiency of more than 5 mu m is as high as 99 percent; the detachable basket type sand collecting mechanism can adapt to the wellhead sand removal without flushing water; meanwhile, clear water is reserved to wash an inlet and an outlet, so that fine cleaning can be realized, and the device is suitable for occasions with water; the device is suitable for continuous separation of gas, liquid and sand with the pressure of the wellhead incoming gas up to 105 MPa; the rotational flow desanding mechanism is connected with the basket filter in series, and the protruding performance is high and fine in desanding efficiency except for independent completion and corresponding functions; the rotational flow desanding mechanism is connected with the basket filter in series, so that the overhaul frequency of a filter element of the basket filter is reduced to the maximum extent; the rotational flow sand removing mechanism and the basket filter can be used in series or independently. The desander used in series is generally used in gas wells requiring high desanding accuracy. The sand remover used independently can be used for extracting the filter element of the basket type filtering mechanism in a gas well with low sand removing requirement (less sand output of the gas well) or with the increase of the mining period and the reduction of sand output, namely the sand remover is suitable for being used as a rotational flow sand remover. The perfect combination of the mobile sand removing equipment with one use and one spare reduces the occupied area, and is convenient to operate and switch for use. The method can be applied to places such as natural gas single wells, shale gas single wells, treatment plants and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a fine whirl of high pressure filters sand removal system which characterized in that, includes the desanding unit, the desanding unit includes:
a barrel; a cyclone desanding mechanism is formed inside the cylinder and used for separating gas, liquid and solid phases of the natural gas to be treated;
the upper parts of the cylinder bodies of the basket type filtering mechanisms are connected; the basket type filtering mechanism is used for carrying out secondary filtering on the received gas-phase substances discharged by the rotational flow desanding mechanism;
the detachable basket type sand collecting mechanism comprises a first shell and a sand collecting barrel arranged in the first shell, and the first shell is connected with the lower part of the barrel; the sand collecting barrel is used for receiving the solid-phase materials discharged by the rotational flow sand removing mechanism so that the solid-phase materials are carried to the outside of the first shell when the sand collecting barrel is drawn out from the inside of the first shell.
2. The high pressure fine cyclone filtration desanding system according to claim 1, wherein the cyclone desanding mechanism comprises an air inlet and a liquid outlet, the liquid outlet being formed on the barrel.
3. The high pressure fine cyclone filtration desanding system of claim 2 wherein the basket filter mechanism includes a second housing and a filter basket located within the second housing; the second shell is connected with the upper part of the barrel, an air outlet is formed in the second shell, and the air outlet and the liquid outlet are respectively connected with a downstream conveying main pipe.
4. The high-pressure fine cyclone filtering and desanding system according to claim 3, wherein the second shell is arranged coaxially with the filter vat, the axial direction of the second shell is arranged at an included angle of 30-45 degrees with the horizontal plane, one end of the second shell at a high position is opened so as to form an opening for the filter vat to enter and exit, and a second quick-opening blind plate is formed at the opening; one end of the second shell located at the low position is closed and the air outlet is formed.
5. The high-pressure fine cyclone filtering desanding system as claimed in claim 3, wherein an inlet pressure gauge is arranged on the pipeline connecting the air inlet with the wellhead air supply, and a differential pressure gauge is connected between the pipeline connecting the air inlet with the wellhead air supply and the pipeline connecting the air outlet with the downstream conveying main pipe.
6. The high-pressure fine cyclone filtering desanding system as claimed in claim 2, wherein the pipeline connecting the liquid discharge port and the downstream delivery main is provided with an outlet pressure gauge and a water filling and emptying port.
7. The high pressure fine cyclone filtration desanding system of claim 1 wherein a hydrosand wash port and a level gauge port are formed on the cartridge.
8. The high-pressure fine cyclone filtering and desanding system according to claim 1, wherein the first housing is arranged coaxially with the sand collecting barrel, and the axial direction of the first housing is arranged at an angle of 30-45 ° to the horizontal plane.
9. The high pressure fine cyclone filtration desanding system according to claim 8, wherein the first housing is open at one end in the high position to form an opening for the sand collection barrel to enter and exit, and a first quick-opening blind plate is formed at the opening; the first shell is located one end of the low position and is sealed, and a reserved sand discharge port is formed.
10. The high pressure fine cyclone filtration desanding system according to any of the claims 1-9, characterised in that it comprises two sets of said desanding units in parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010741522.2A CN111841227A (en) | 2020-07-29 | 2020-07-29 | High-pressure fine cyclone filtering and desanding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010741522.2A CN111841227A (en) | 2020-07-29 | 2020-07-29 | High-pressure fine cyclone filtering and desanding system |
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| CN111841227A true CN111841227A (en) | 2020-10-30 |
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| CN202010741522.2A Pending CN111841227A (en) | 2020-07-29 | 2020-07-29 | High-pressure fine cyclone filtering and desanding system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209762A (en) * | 2021-05-08 | 2021-08-06 | 成都汇川新能科技有限公司 | Automatic gas-liquid-sand mixed fluid desanding system for natural gas exploitation |
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| CN206828463U (en) * | 2017-04-28 | 2018-01-02 | 李明 | Natural gas desander |
| US20190093467A1 (en) * | 2017-09-27 | 2019-03-28 | Forum Us, Inc. | Downhole sand and gas separation system for use with a rod pump |
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| CN203329490U (en) * | 2013-05-24 | 2013-12-11 | 中国石油化工股份有限公司 | Top-mounted oil gas rotational-flow filter |
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Inventor after: Ge Haofei Inventor after: Li Miaoying Inventor after: Zhang Yanan Inventor after: Chen Bing Inventor after: Si Wenhua Inventor after: Guan Zheng Inventor after: Sui Xin Inventor before: Guan Xiaoming Inventor before: Hu Xiaoyang Inventor before: Ge Haofei Inventor before: Li Miaoying Inventor before: Si Wenhua Inventor before: Guan Zheng Inventor before: Sheng Huanhuan Inventor before: Sui Xin |
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Application publication date: 20201030 |