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(11) | EP 3 260 654 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
| published in accordance with Art. 153(4) EPC |
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| (54) | GAS-LIQUID SEPARATION AND COMPRESSION/PUMPING UNITS CAPABLE OF BEING MOUNTED IN PRODUCTION WELLS AND INJECTION WELLS |
| (57) The present invention refers to individual subsea solutions to be applied in production
well for gas-liquid separation and injection well for compression or pumping of gas
or water current in subsea systems of oil exploration. Said solutions refer to a unit
for gas-liquid separation mountable in production well, which comprises a unit of
gas-liquid separation (1) directly connected to an adapter base of BAP production
or "Tubing Head" (2); and a unit for compression/pumping mountable in injection well comprising a
unit of compression or pumping (4) that is directly connected to a BAP or ("Tubing Head") (5), being the flow line having gas or water to be injected connected to the BAP
or ("Tubing Head") (5). |
Field of the Invention
[0001] The present invention refers to individual subsea solutions to be applied in production well for gas-liquid separation and injection well for compression or pumping of the gas or water current in subsea systems of oil exploration.
Description of the Invention
[0002] As depicted in Figure 1, the present invention refers to a unit of gas-liquid separation (1) that is connected to an adapter base of BAP production or "Tubing Head" (2), or alternatively in a well head with string suspensor previously installed in the production well.
[0003] Said unit of gas-liquid separation (1) comprises also the barriers necessary to safety and control of the well, such that to discard the use of a wet Christmas tree ("X-tree").
[0004] The unit of gas-liquid separation (1) directs the separated gas for a flow line (3) through the BAP mandrel (2). Alternatively, the said unit of gas-liquid separation (1) may also provide the mandrel for connecting the flow line (3) to the gas outlet. Doing so, the separated liquid is sent to a second flow line through a second mandrel in the BAP. Additionally, the unit of gas-liquid separation (1) may also provide the mandrel for connecting the liquid flow line.
[0005] The application of this solution according to the present invention is specially indicated for anticipated production systems (SPA) or long duration tests (TLD). In this case, the mandrel for liquid outlet of the unit of gas-liquid separation (1) may be provided in its top, easing the connection with SPA or TLD for sending the liquid current to the surface facilities.
[0006] In the injection well, the solution according to the present invention comprises a unit of compression or pumping (4) that is directly connected to a BAP or ("Tubing Head") (5) or to a well head with string suspensor. The flow line having gas or water to be injected may be connected to BAP or ("Tubing Head") (5) or, alternatively, directly to the unit of compression/pumping (4). The gas or liquid is then compressed or pumped to the injector well.
[0007] It is important to note that said unit of compression/pumping (4) also has the barriers necessary to safety and to control of the well, which also makes the use of a wet Christmas tree ("X-tree") dispensable.
[0008] As can be appreciated by those skilled in the art, the solution according to the present invention is easily applicable to sceneries with several wells where the gas and liquids produced or to be injected may be distributed through the subsea arrangement having traditional equipment, such as manifolds and PLEMs.
1. Unit of gas-liquid separation mountable in production well, wherein it comprises a
unit of gas-liquid separation (1) directly connected to an adapter base of BAP production
or "Tubing Head" (2), as well as the barriers necessary to safety and control of the well, such that
to discard the use of a wet Christmas tree ("X-tree").
2. Unit of gas-liquid separation mountable in production well, according to claim 1,
wherein it is connected to a well head with string suspensor previously installed
in the production well.
3. Unit of gas-liquid separation mountable in production well, according to claim 1,
wherein said unit of gas-liquid separation (1) directs the separated gas to a flow
line (3) through a BAP mandrel (2).
4. Unit of gas-liquid separation mountable in production well, according to claim 1,
wherein said unit of gas-liquid separation (1) may also provide the mandrel for connecting
the flow line (3) to the gas outlet, such that the separated liquid is sent to a second
flow line through a second mandrel in the BAP.
5. Unit of gas-liquid separation mountable in production well, according to claim 1,
wherein said unit of gas-liquid separation (1) may also provide the mandrel for connecting
the liquid flow line.
6. Unit of gas-liquid separation mountable in production well, according to claim 1,
wherein it is applied in anticipated production systems (SPA) or long duration tests
(TLD), the liquid outlet mandrel for the gas-liquid separating unit (1) is therefore
capable of being provided at its top.
7. Unit of compression/pumping mountable in injection well, comprising a unit of compression
or pumping (4) that is directly connected to a BAP or ("Tubing Head") (5), being the flow line having the gas or water to be injected connected to the
BAP or ("Tubing Head") (5).
8. Unit of compression/pumping mountable in injection well, according to claim 7, wherein
it is directly connected to a well head with string suspensor.
9. Unit of compression/pumping mountable in injection well, according to claim 7, wherein
said flow line having gas or water to be injected is directly connected to the unit
of compression/pumping (4).
10. Unit of compression/pumping mountable in injection well, according to claim 7, wherein
said unit of compression/pumping (4) also has the barriers necessary to safety and
control of the well, making the use of a wet Christmas tree ("X-tree") dispensable.