RU123062U1 - DEVICE FOR INCREASING OIL AND GAS PRODUCTION FROM DRILLING WELLS (OPTIONS) - Google Patents

Abstract

1. A device for increasing the production of hydrocarbons from boreholes, comprising a body made one-piece with a central through channel, and at least one mandrel made hollow with the possibility of fixing the body in the well pipe, while the surface of the mandrel cavity is mated or aligned with the surface a central through channel made in the form of a Laval nozzle with the possibility of creating, regulating and maintaining the design bottomhole pressure under the device, and above it - a two-phase gas-liquid homogeneous flow, which ensures effective removal of hydrocarbons on the surface. 2. The device according to claim 1, characterized in that it is additionally provided with a means for a hermetically detachable connection of the body with the mandrel with the possibility of their joint lowering into the well and positioning at a given depth. The device according to claim 1, characterized in that horizontal through holes are made in the body to create a fluid passage from the bottomhole zone to the low pressure zone with subsequent removal. A device for increasing the production of hydrocarbons from boreholes, comprising a body made with a central through channel and at least one mandrel made hollow with the possibility of fixing the body in the well pipe, while the surface of the mandrel cavity is mated or aligned with the surface of the central through channel , made in the form of a Laval nozzle with the possibility of creating, regulating and maintaining the design bottomhole pressure under the device, and above it - a two-phase gas-liquid homogeneous flow, ensuring effective removal of hydrocarbons on the surface, �

Description

The utility model relates to devices for increasing the production of hydrocarbons, namely liquid or gaseous fluids, in particular, for increasing the production of oil and natural gas from boreholes and can be used in the oil and gas industry.

From US Pat. No. 5,893,414, a device for producing liquid or gaseous fluids is known having a system of communicating cavities with an inlet conical opening formed by coaxially located Venturi pipes above the inlet pipe, the diameter of which gradually increases in the direction of flow.

The known device has several significant disadvantages. Thus, the multi-stage structure of Venturi pipes leads to many small swirling flows that cannot be accurately calculated at transitions from one pipe diameter to another, which greatly complicates the calculation of energy losses in the device. This, in turn, makes it impossible to predict the optimal mode of operation of the current state of the well. At the same time, in the “swirling zones” an annular mode is formed at the inlet and the liquid flows down along the pipe walls in the bottom-hole part of the well, which significantly increases pressure and, therefore, reduces the efficiency and slows down the process of well optimization.

The objective of the claimed utility model is to create a device to increase the production of liquid or gaseous fluids.

The technical result of the claimed utility model is to provide the ability to control and maintain the estimated bottomhole pressure under the device and create a two-phase gas-liquid uniform flow over the device, which ensures the effective removal of hydrocarbons on the surface.

The technical result according to the first embodiment of the device is achieved in that the device for increasing hydrocarbon production from boreholes comprises a housing made integrally with a central through channel and at least one mandrel made hollow with the possibility of fixing the housing in the well pipe. The surface of the mandrel cavity is mated or aligned with the surface of the central through channel made in the form of a Laval nozzle with the possibility of creating, regulating, and maintaining the calculated bottomhole pressure under the device, and above it a two-phase gas-liquid homogeneous flow, which ensures the effective removal of hydrocarbons on the surface.

The technical result according to the first embodiment of the device is also achieved by the fact that the device is additionally equipped with a means for hermetically detachable connection of the housing with the mandrel with the possibility of their joint descent into the well and location at a given depth.

The technical result according to the first embodiment of the device is also achieved by the fact that horizontal through holes are made in the housing to create a passage of fluid from the bottomhole zone to the low pressure zone with subsequent removal.

The technical result of the second embodiment of the device is achieved in that the device for increasing hydrocarbon production from boreholes comprises a housing made with a central through channel and at least one mandrel made hollow with the possibility of mounting the housing in the well pipe. The surface of the mandrel cavity is mated or aligned with the surface of the central through channel made in the form of a Laval nozzle with the possibility of creating, regulating, and maintaining the calculated bottomhole pressure under the device, and above it a two-phase gas-liquid homogeneous flow, which ensures the effective removal of hydrocarbons on the surface. The housing consists of at least two parts, the surfaces of the central through channels of which are mated.

The technical result according to the third embodiment of the device is achieved in that the device for increasing hydrocarbon production from boreholes comprises a housing made integral with a central through channel, and at least one mandrel with a sealant for its installation, made hollow with the possibility of mounting the housing in well pipe. The surface of the mandrel cavity is mated or aligned with the surface of the central through channel made in the form of a Laval nozzle with the possibility of creating, regulating, and maintaining the calculated bottomhole pressure under the device, and above it a two-phase gas-liquid homogeneous flow, which ensures the effective removal of hydrocarbons on the surface. Through-holes for fluid passage are made in the housing and seal.

The utility model is illustrated by drawings.

Figure 1 shows the claimed device in accordance with the first embodiment;

Figure 2 shows the claimed device in accordance with the second embodiment;

Figure 3 shows the claimed device, placed in the well;

Figure 4 shows the claimed device placed in the well above the mandrel;

Figure 5 shows the claimed device placed in the well under the mandrel;

Figure 6 shows sections A-A and B-B of figure 5.

The device 1 (figure 1) has a housing 2 with a central through channel (hole) 3, while the housing 2 has a strong, impermeable wall without holes. The through channel 3 has the shape of a Laval nozzle. Channel 3 has two conical parts 4 and 5, which are paired with each other in the narrowest places 6.

The input 4 of channel 3 is shorter, it is defined as a confuser, while the outer part 5 is larger and is identified with a diffuser. The size of parts 4 and 5 of the internal channel 3 depends on the current parameters of the layer (layer pressure, current saturation pressure, gas, water content, porosity, permeability, density of oil, water, gas, etc.), as well as on the well operation parameters ( round-the-clock production, the nature of the production of oil, water, gas, condensate), inlet pressure, size of the inlet nozzle, line pressure, pressure in the separator, etc.

The device can be attached to mandrels of various types. With the mandrel, it drops to the desired calculated (calculated) depth. This level is fixed and kept hermetically sealed with a mandrel seal. In this position, it is stored to ensure the operation of the device.

While FIG. 1 shows a device in the form of an integral part, it can also be made of several parts, as shown in FIG. Parts of the device, which are indicated by the numbers 7, 8, 9, can be connected to each other using known means, for example, thread 10.

Figure 3 shows the location of the device in the well and its connection with the pipe using a mandrel. Position 11 denotes a pipe, position 12 denotes a mandrel of any type, position 13 denotes the gripping mechanism of a mandrel, position 14 denotes a mandrel seal. The housing 2 is located under the mandrel 12. The device increases the production of oil and gas condensate.

When the device is used to remove fluid from the bottom of the gas and gas condensate wells, the housing 2 with horizontal holes 15 is mounted above the mandrel, as shown in figure 4, or at the end of the pipe without mandrel with another element.

In another embodiment, shown in FIG. 5, the housing 2 with horizontal openings 15 is located under the mandrel and the seal 16, while the installation of the mandrel is provided by a vertical passage 17 in the form of, for example, a longitudinal hole through which liquid and gas condensate can pass.

The claimed device can be made without these longitudinal holes, depending on the state of the stream.

Figure 5 shows the cross-section in the places of the seal - A-A, and horizontal holes - B-B.

The device generates a completely homogeneous gas-liquid flow in the well by eliminating stepped zones in the Venturi pipe system, which create swirling sources with the resulting energy loss. The device parameters calculated on the basis of the current layer and well data can provide an accurate forecast without deviations from the actual conditions governing the process and optimization of the “layer-well” system using the device and the inlet pipe.

With the device, the recovery efficiency and well operating time are significantly increased, the daily oil production and the oil recovery coefficient as a whole are increased. At the same time, fluid is quickly and efficiently removed from the bottom of the well, and consequently, the productivity of gas and gas condensate wells increases due to a decrease in bottomhole pressure to the design level.

Claims (5)

1. Device for increasing hydrocarbon production from boreholes, comprising a housing made integral with a central through channel, and at least one mandrel made hollow with the possibility of mounting the housing in the well pipe, while the surface of the mandrel cavity is mated or aligned with the surface a central through channel made in the form of a Laval nozzle with the possibility of creating, regulating and maintaining the calculated bottomhole pressure under the device, and above it a two-phase gas-liquid homogeneous stream, providing effective removal of hydrocarbons on the surface. 2. The device according to claim 1, characterized in that it is additionally equipped with a means for hermetically detachable connection of the housing with the mandrel with the possibility of their joint descent into the well and location at a given depth. 3. The device according to claim 1, characterized in that in the housing there are horizontal through holes for creating a passage of fluid from the bottomhole zone to the low pressure zone with subsequent removal. 4. A device for increasing hydrocarbon production from boreholes, comprising a housing made with a central through channel, and at least one mandrel made hollow with the possibility of fixing the housing in the well pipe, while the surface of the mandrel cavity is mated or aligned with the surface of the central a through channel made in the form of a Laval nozzle with the possibility of creating, regulating and maintaining the calculated bottomhole pressure under the device, and above it a two-phase gas-liquid homogeneous flow, ensuring which effectively removes hydrocarbons on the surface, the housing consisting of at least two parts, the surfaces of the central through channels of which are conjugated. 5. Device for increasing hydrocarbon production from boreholes, comprising a housing made integral with a central through channel, and at least one mandrel with a sealant for its installation, made hollow with the possibility of mounting the housing in the pipe of the well, while the surface of the mandrel cavity mated or aligned with the surface of the central through channel, made in the form of a Laval nozzle with the ability to create, control and maintain the estimated bottomhole pressure under the device, and above it - two-phase gas homogeneous fluid flow, providing effective removal of hydrocarbons on the surface, and in the body and seal through holes are made for the passage of fluid.