WO2023167614A1

WO2023167614A1 - System and method for containment of flowback fluids of wellbore

Info

Publication number: WO2023167614A1
Application number: PCT/SA2022/050004
Authority: WO
Inventors: Majed Faiz ALAHMARI; Khalid Faiz ALAHMARI
Original assignee: Alahmari Majed Faiz; Alahmari Khalid Faiz
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2023-09-07

Abstract

The present disclosure relates to a system for containment of flowback fluids of a wellbore. The system includes one or more pipelines (108a-108b) extending from a wellhead (126) of the wellbore to carry the flowback fluids. A first container (102) includes a mechanical structure (112) to receive the waste matter from at least one pipeline (108a) that carries the waste matter from the wellhead (126). The mechanical structure (112) is adapted to reduce speed of waste fluids present in the waste matter being received from the at least one pipeline (108a). At least one heating units (106) is arranged at a portion of the first container (102) to receive the waste gases from at least one pipeline (108b) and burn the waste gases into non-combustible byproducts. A second container (104) is coupled to the first container (102) to collect the waste matter from the first container (102).

Description

SYSTEM AND METHOD FOR CONTAINMENT OF FLOWBACK FLUIDS

OF WELLBORE

FIELD OF THE INVENTION

[001] The present disclosure generally relates to a flowback fluids treatment system. More particularly, the present disclosure relates to a system and a method for containment of flowback fluids of a wellbore.

BACKGROUND OF THE INVENTION

[002] A well completion process involves a plurality of procedures required for making an oil and/ or gas well ready for production. Some of the well completion procedures include casing, cementing, perforating, gravel packing and installing a production tree for drilling the oil / gas from the completed well. Usually, a large amount of waste fluids or flowback fluids get generated during such well completion, drilling processes and clean out procedures. The waste fluids are mostly is discharged into the environment untreated.

[003] In some cases, the waste fluids may be treated prior to being discharged into the environment. For example, most common treatment method at present comprises a cyclic utilization and a recycling of waste liquid after treatment, reinjection and discharge. But, the waste fluids generated in the oil well fracturing techniques contain pollutants that have complex components, are high in concentration, viscosity and pose large treatment difficulty. Hence, despite the treatment, once discharged into the environment substandard environmental pollution and the like may occur. Further, such waste fluids may contaminate the soils and groundwater due to presence of various chemicals. The solid waste and wastewater being generated are an environmental concern and a health hazard as the number of landfills and volume of non-disposable solid waste are expanding rapidly.

[004] In some cases, to collect such waste fluids a flare pit is constructed within an excavation that exists or is dug a couple of meters (for example 2-3 meters) below a ground level. The flare pit is lined with a non-combustible lining of rocks, clay, refractory material, concrete, soil or any other material that serves as a groundwater protection layer. However, due to the ineffectiveness of the soil and aforementioned groundwater protection layer, the flare pit fails to prevent soil and groundwater contamination due to seepage of the flowback fluids through the layer. Further, the materials used for the protection layer may also turn into solid waste thereby resulting in further environmental pollution. Furthermore, such flare pits are usually left unattended once the oil well operation is complete which is not only a serious environment issue but tend to occupy a huge area of land thereby deteriorating the overall landscape.

[005] In order to overcome the drawbacks as aforementioned, there is a need for an improved system and method for containment of flowback fluids of the wellbore in a quick, cost effective and environmentally safe manner. Accordingly, an alternate system and method for containment of flowback fluids of the wellbore is disclosed.

SUMMARY OF THE INVENTION

[006] An aspect of the present disclosure provides a system for containment of flowback fluids of a wellbore. The system includes one or more pipelines extending from a wellhead of the wellbore to carry the flowback fluids. The flowback fluids comprise waste matter and waste gases. A first container (alternatively known as chute) includes a mechanical structure to receive the waste matter from one or more pipelines that carry the flowback fluids from the wellhead. The mechanical structure is adapted to reduce a speed of waste fluids present in the waste matter being received from the at least one pipeline. In an embodiment, the mechanical structure is a wall like structure of the first container that is diametrically opposite to an opening of one or more pipelines from which the waste matter and waste gases are discharged into the first container. In an embodiment, the mechanical structure is perpendicular to a base of the first container. In another embodiment, the mechanical structure is at an inclination of 45 to 80 degrees to the base of the first container.

[007] At least one heating unit (for example a burner) is arranged at a front portion of the first container (or the chute) to receive the waste gases from at least one pipeline that carries the waste gases from the wellhead. The at least one heating unit is configured to operate up to 1500 Celsius and burn the waste gases into non-combustible byproducts. In order to protect the first container from the flare created due to the burning of the waste gases inside the first container, an inner surface of the first container is coated with refractory bricks. The refractory bricks make the first container fire resistant which in turn enhances the durability of the system at high temperatures.

[008] Further, the reduction in speed of the waste fluids helps in easy collection and flow of the waste matter towards an opening constructed within the base of the first container. The waste matter flow through the opening and collect into a second container situated below the first container. Typically, the second container is placed within a flare pit constructed at a predetermined depth below the ground level. Further, the second container is coupled to the first container, via the opening (e.g. a drain). In an embodiment, the first container may have an opening (or a drain) at the base (a bottom portion of the first container) which is coupled to a pipe that opens to a top of the second container in order to facilitate flow of the waste matter from the first container into the second container.

[009] The second container is adapted to store the waste matter up to a predetermined capacity. One or more floating sticks is coupled to the second container, wherein the one or more floating sticks include one or more reflecting colors for monitoring a fluid level of the waste matter in the second container. In an embodiment, the second container further includes a discharge valve configured to discharge the waste matter from the second container into a hose when the waste matter reaches the predetermined capacity. The hose is configured to carry the waste matter from the discharge valve into a storage tank via a pump. The second container further comprises an access or abutment with clamps installed at a top portion of the second container for holding the hose to facilitate sucking of the waste matter in case the valve is blocked.

[0010] In an embodiment, a length, a width and a height of the second container may be 12 meter (m), 3m and 2.3m, respectively; and where a length, a width and a height of the mechanical structure is 13m, 2.5m and 1.7m, respectively. However various dimensions of the second container may be envisaged depending on a site condition, operation records, expected quantities of waste mater to be collected and such operational parameters. [0011] Another aspect of the present disclosure provides a method for containing flowback fluids of a wellbore, where the flowback fluids comprise waste matter and waste gases. The method includes provisioning a first container having an inbuilt mechanical structure for receiving the waste matter from at least one pipeline that carries the waste matter from a wellhead of the wellbore. The inbuilt mechanical structure is adapted to reduce a speed of waste fluids present in the waste matter for facilitating easier collection of the waste matter towards an opening or drain provided at a base or bottom portion of the first container. Further, the method includes coupling a second container to the first container, where the second container is configured to receive the waste matter from the opening of the first container. Further, the method includes arranging at least one heating unit at a front portion of the first container to receive the waste gases from at least one pipeline that carries waste gases from the wellhead. The at least one heating unit is configured to burn the waste gases into noncombustible byproducts. Disclosed method provides for continuous combustion of waste gases within the first container and collection of waste matter into the second container thereby facilitating continuous containment of flowback fluids from the wellbore.

[0012] These and other features will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings and claims. The features and advantages of the present disclosure will be readily apparent to those skilled in the art upon a reading of the description of the embodiments that follows.

BRIEF DESCRIPTION OF DRAWINGS

[0013] For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description:

[0014] FIG. 1 illustrates an environment in which various embodiments of a system for containment of flowback fluids of a wellbore can be practiced, in accordance with an embodiment of the present disclosure.

[0015] FIG. 2 illustrates a front perspective view of the system for containment of the flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure. [0016] FIG. 3 illustrates a top perspective view of an arrangement of a first container and a second container included in the system for containment of flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure.

[0017] FIG. 4 illustrates a top view of the system for containment of flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure.

[0018] FIG. 5 illustrates a side sectional view of the system for containment of flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure.

[0019] FIG. 6 is a flowchart illustrating a method for containing flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0020] The present disclosure is related to a system and method for containment of flowback fluids of a wellbore. The system includes one or more pipelines extending from a wellhead of the wellbore to carry the flowback fluids. The flowback fluids comprise waste matter and waste gases. A first container includes a mechanical structure also known as a chute, to receive the waste matter from at least one pipeline that carries the waste matter from the wellhead. At least one heating unit is arranged at a front portion of the first container to receive the waste gases from at least one pipeline and burn the waste gases into non-combustible byproducts. The at least one heating unit is operated up to 1500 Celsius. A second container coated with a chemical and fire resistant material, is coupled to the first container, to receive the waste matter from the first container. Various embodiments of the present disclosure can be practiced using the system illustrated in Figures 1 to 5.

[0021] FIG. 1 illustrates an environment (100) in which various embodiments of a system and method for containment of flowback fluids of a wellbore can be practiced. Generally, the system is deployed at distance from an oil and gas wellbore (not shown) and includes one or more pipelines (108a-b) (e.g., flowback pipeline or the like) that carry the flowback fluids from the wellbore. The flowback fluids include waste matter and waste gases. The waste matter may include waste fluids and solid wastes, and mixtures thereof. Examples of waste fluids include but are not limited to organic waste liquids, organic chlorine-containing waste liquids, chromium-containing waste liquids, acid waste liquids, metal waste liquids, alkali waste liquids and the like. Examples of solid wastes and mixtures can include drilling fluid, silt, sand, other proppants, debris, water, brine, oil, paraffin, produced water, additives or other materials that are removed from the wellbore during the completion of an oil well or a gas well, and examples of the waste gases may include a Landfill Gas (LFG), a non-methane organic compound and the like. The flowback fluids may also include other additives that flow post well stimulation and/or during production of the oil well or gas well.

[0022] The system further includes a first container (102), at least one heating unit (106), and a second container (104) installed in an open space such as a desert land and at a distance from the wellbore. In an alternate embodiment, the system can be adapted to collect waste fluids of any industrial processing plant. In operation, the system holds the flowback liquids in an environmental friendly manner until completion of the drilling and working of the wellbore. Upon completion of the wellbore operations, the flowback liquids that are contained within the system are transferred to an appropriate transportable storage facility, and the system is dismantled thereby ensuring complete protection to the landfills and underground resources of the environment (100).

[0023] FIG. 2 shows a front perspective view (200) of the system for containment of flowback fluids of a wellbore, in accordance with an embodiment of the present disclosure. As shown in FIG. 2, the first container (102) (alternatively known as chute) is an open rectangular shaped structure with an open top portion. The top portion of the first container (102) is generally kept open, however in an embodiment, on the top portion of the first container (102) one or more supporting units (116) can be constructed in parallel to provide sturdiness to a framework of the first container (102). The one or more supporting units (116) can include a frame, a plurality of metallic rods, a structural system or the like that can serve as means for lifting the first container (102). The one or more supporting units (116) can also serve as means for protecting the second container (104) from pending during rig up and rig down operations. Materials used for making the one or more supporting units (116) include but are not limited to stainless steel, ferrous alloys, and aluminum.

[0024] A bottom or base (150) of the first container (102) is sealed closed with the lateral walls of the first container (102) to protect the underlying ground surface from the flowback fluids. The materials used for constructing the first container (102) may include stainless steel, carbon steel, aluminum and the like. Further, an inner surface of the first container (102) including the walls and the base (150) are layered with refractory bricks (e.g. 118) to withstand high temperatures.

[0025] Further, through a front portion of the first container (102), which is open, the one or more pipelines (108a- 108b) are provided an open access to discharge the flowback fluids into the first container (102). The one or more pipelines (108a-108b) may extend from a wellhead (126) (see FIG. 4) of the wellbore to the first container (102) to carry the flowback fluids. Examples of the one or more pipelines (108a-108b) may include a drill string, a casing string, a work string, a production string, coiled tubing, segmented tubing, or the like. In an embodiment, the at least one pipeline (108a) can carry waste matter containing waste fluids and solid wastes, and the at least one pipeline (108b) can carry waste gases from the wellbore.

[0026] Further, at the front portion of the first container (102), at least one heating unit (106) is placed. The waste gases that are carried by the at least one pipeline (108b) are provided to the at least one heating unit (106) that is configured to bum the waste gases into non-combustible byproducts (e.g., aromatic hydrocarbons, such as benzene). Generally the at least one heating unit (106) is operated up to 1500 Celsius. Energy required for aforesaid burning is obtained from fuels such as natural gas or liquefied petroleum gas (LPG). As mentioned above, in order to protect the first container (102) from the flare and heat created due to the burning of the waste gases the inner surface of the first container (102) is coated with the refractory bricks (118). The refractory bricks (118) make the first container (102) fire resistant which in turn enhances a durability of the system at high temperatures.

[0027] Further, in practice the waste matter that is carried by the at least one pipeline (108a) flows at a very high speed and pressure of (2000 PSI ) more and less, from the wellhead (126) and gets discharged with extreme pressure into the first container (102). In order to collect the waste matter there is a need to reduce the speed and pressure of the waste matter. Hence at a back wall of the first container (102) that is diametrically opposite to an opening of the one or more pipelines (108a-b) through which the waste matter is discharged, a mechanical structure (112) is provided that is adapted to reduce the speed of the waste fluids present in the waste matter that is discharged therein. [0028] In an embodiment, the mechanical structure (112) is a wall-type rectangular structure that is perpendicular to a base (150) of the first container (102). However, in another embodiment the mechanical structure (112) can be a wall-type structure that is at an inclination ranging for example from 45 to 80 degrees, to the base (150) of the first container (102). In an example, a length, width and height of the mechanical structure (112) can be 13m, 2.5m and 1.7m, respectively. However, based on a requirement and implementation, the length, width and height of the mechanical structure (112) can be altered.

[0029] In yet another embodiment, the mechanical structure (112) can be a fire resistant chute, an inclined plane type channel or a passage through which waste matter can pass through by means of gravity into the second container (104). Typically, the reduction in speed of the waste fluids helps in easy collection and flow of the waste fluids towards an opening constructed within the base (150) of the first container (102). The waste fluids flow through the opening and collect into the second container (104) that is positioned below the first container (102). Typically, the second container (104) is placed within a flare pit and is coupled to the first container (102), via the opening (e.g. a drain).

[0030] In an embodiment, the coupling is formed by extending a connecting unit (e.g. pipe) from the opening of the first container (102) to an opening on a top of the second container (104). Alternatively, the coupling can be an arrangement where the opening at the base (150) of the first container (102) lies above the opening of the second container (104). Alternatively, the coupling may be an arrangement where the opening at the base (150) of the first container (102) rolls over to the opening of the second container using a roller or a movable support. Based on the requirement and implementation, various forms of coupling between the first container (102) and the second container (104) can be envisaged. Further, based on a requirement and implementation, a shape and dimensions of the first container (102) and the second container (104) can be altered.

[0031] Further, as shown in Figs. 1 and 2, the first container (102) is placed in line with a ground level and the second container (104) is placed in a flare pit (128) constructed at a predetermined depth below the ground level. Usually, the flare pit (128) is circumvented by a slope shoulder (114) (see FIG. 4) having at least two layers of slope. For example, the slope shoulder (114) can have a single inclination to provide a depth to the flare pit (128). In another example, the slope shoulder (114) can have a first layer of slope at a first inclination to the ground level, and a second layer of slope midway from the ground level and at a second inclination to the first layer. In an example, the second container (104) can be placed at a depth of 2 meters from the ground level in the flare pit (128).

[0032] The second container (104) may be made of carbon steel material. However, based on the requirement and implementation, the second container (104) can be made of aluminium, metallic alloy and any such light weight non-porous material. Further, the second container (104) is coated with a chemical and fire resistant material to withstand the high temperature of the waste matter received from the first container (102). Examples of the chemical and fire resistant material may include but are not limited to a fire-resistant glass material, concrete, stucco, brick, cement render, geobond asbestos substitute, fire-retardant treated wood, gypsum boards, asbestos cement and the like. Further, based on the requirement and implementation, a plurality of dimensions of the second container (104) can be envisaged. For example, a length, width and height of the second container (104) can be 12 meter (m), 3m and 2.3m, respectively. In another example, the second container (104) can be an oval shaped container with a capacity of 72,000 liters.

[0033] Further, one or more floating sticks (not shown) are provisioned for monitoring a level of the waste matter collected within in the second container (104). The one or more floating sticks are coated with a plurality of reflecting colors to indicate a level of the waste matter. For example, a red reflecting color can indicate that the level of waste matter has reached a maximum capacity of the second container (104), a grey color can indicate that the level of the waste matter is at 20 percent of a total capacity of the second container (104) and a green color can indicate that the second container (104) is still empty. However, based on the requirement different level measuring techniques or color indications can be implemented. In an embodiment, a portion of a side wall(s) of the second container (104) is made of a transparent glass material that is marked with scale values to help visualize a level of the waste matter contained within. In another embodiment, at a top of the second container (104) a liquid flowing device in shape of a horn mouth (not shown) is provided to enable an operator to conveniently observe the level of the waste matter in the second container (104).

[0034] After collection of the waste matter by the second container (104), the waste matter is configured to flow through a discharge nozzle (not shown) or a discharge valve (not shown) and a non-flammable high temperature resistant hose using a pump (122) (refer FIG. 4) into a storage tank (124) (refer FIG. 4). In operation, the discharge value is configured to discharge the waste matter from the second container (104) into the storage tank (124) via a hose (110) (refer FIG. 4) when the level of the waste matter reaches a predetermined threshold. In an example, the pump (122) (for example, a C- shaped pump, a centrifugal pump, or the like) is installed within the hose (100) for pumping the waste matter from the second container (104) to the storage tank (124). Generally, a length of the hose (110) may be a few meters (for example 100 meters). However, based on the requirement and implementation, the length of the hose (110) can be altered. Further, usually a non-flammable high temperature resistant hose is used for said discharge. A capacity of the storage tank (124) is usually 450-500 barrel. In an implementation, the valve is provided with two backup valves (not shown). Further, whenever the storage tank (124) is full, a vacuum truck (not shown) may be sent to suck the waste matter therein, and transport the waste matter to a location where waste matter may be further processed as per the prevalent norms and practices.

[0035] Due to continuous usage or due to lack of maintenance, the discharge valve of the second container may get blocked due to excess dirt accumulation. In an emergency or a disaster condition where all discharge valves of the second container (104) get blocked and excess waste matter gets accumulated within the second container (104), an urgent need to remove the waste matter from the second container (104) arises. In such a situation, an access on a top portion of the second container is required to facilitate removal of the accumulated waste matter. Hence, for such emergency situations, a staircase arrangement (120) (as shown in Figs. 3, 4 and 5) is provided that facilitates access to the top portion of the second container (104). An abutment(s) (130) (as shown in FIG. 5) is installed at the top portion of the second container (104) for holding the hose (110) (as shown in FIG. 4) in order to suck the waste matter from the top of the second container (104). As shown in FIG. 4, the discharge hose (110) can be then connected to the pump (122) to facilitate; sucking of the waste matter from the top of the second container (104) and, depositing the waste matter into the storage tank (124).

[0036] As observed in Figs. 1 to 5, the second container (104) acts as a barrier between the waste matter and the natural ground surface. Hence, all the waste matter is collected in the second container (104) instead of the flare pit (128) thereby leading to zero landfill waste. In comparison to existing practices where waste matter from wellbores are deposited into flare pits (e.g .128), proposed system replaces the flare pit (128) with the second container (104). The proposed system eliminates any contact of flowback fluids with the underneath soils and groundwater and thereby avoiding contamination of the soil and migration of any released materials into groundwater.

[0037] FIG. 3 illustrates a top perspective view (300) of an arrangement of the first container (102) and the second container (104) included in the system for containment of flowback fluids of the wellbore. The first container (102) includes the mechanical structure (112) and is provided with the at least one heating unit (106), the one or more pipelines (108a-108b), and the one or more supporting units (116). As shown in FIG. 3 the mechanical structure (112) is a wall that is perpendicular to the base (150) of the first container (102). The operations and functions of the first container (102), the at least one heating unit (106), the one or more pipelines (108a- 108b), and the mechanical structure (112) are already explained in conjunction with the Figs. 1 and 2.

[0038] FIG. 4 illustrates a top view (400) of an arrangement of the first container (102) and the second container (104) of the system for containment of flowback fluids. The system includes the first container (102), the second container (104) and the staircase arrangement (120). The operations and functions of the first container (102), the second container (104) and the staircase arrangement (120) are already explained above in conjunction with the FIG. 1 and the FIG. 2. The staircase arrangement (120) can also be used to access the second container (104) during dismantling of the system, or during functional issues.

[0039] FIG. 5 illustrates a side sectional view (500) of the system for containment of flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure. The side sectional view (500) of the system shows the first container (102) and the second container (104) placed over a compacted clay.

[0040] The side sectional view (500) also depicts the at least one heating unit (106), the one or more pipelines (108a-108b), the mechanical structure (112), the staircase arrangement (120) and the abutment(s) (130). The operations and functions of the first container (102), the second container (104), the at least one heating units (106), the one or more pipelines (108a- 108b), the mechanical structure (112), the staircase arrangement (120) and the abutment(s) (130) are explained above in conjunction with the FIG. 1 and the FIG. 2.

[0041] FIG. 6 is a flowchart illustrating a method (600) for containing flowback fluids of the wellbore, in accordance with an embodiment of the present disclosure. The method is performed by using a first container (e.g. 102), a second container (e.g. 104), one or more pipelines (e.g. 108a-b) and at least one heating unit (e.g. .106).

[0042] At 602, the first container having an inbuilt mechanical structure (e.g. 112) is provided at a ground level, for receiving waste matter from at least one pipeline (e.g. 108a) that carries the waste matter from a wellhead of the wellbore. The inbuilt mechanical structure can be an inclined wall like structure adapted to reduce a speed of waste fluids present in the waste matter in order to facilitate collection of the waste matter at an opening (e.g. drain) provided within a base (e.g. .150) or bottom of the first container. The opening is typically a drain through which the waste matter can flow out from the first container.

[0043] At 604, a second container is coupled to the first container, in order to receive the waste matter that flows out from the first container. The second container is installed within a flare pit at a predetermined distance below a ground level and below the opening of the first container. In an example, the opening of the first container can be connected to a pipe or a drain that opens to a top portion of the second container. The waste matter can flow through the pipe or the drain and be released at the other end into the second container. The second container stores the waste matter upto a predetermined threshold, beyond which the waste matter can be transferred via a hose and pump into a transportable storage tank placed external to the flare pit. [0044] At 606, the at least one heating unit is arranged at a front portion of the first container to receive waste gases from at least one pipeline (e.g. 108b), where the at least one pipeline (e.g. 108b) is configured to carry waste gases from the wellhead. The at least one heating unit is configured to burn the waste gases into non-combustible byproducts. An inner surface of the first container is layered with refractory bricks to withstand the flare caused due to burning of the waste gases.

[0045] The disclosed system and method (600) enables safe containment of flowback fluids generated in well bore operations as all the waste matter is collected and stored in the second container. Hence disclosed system and method (600) prevents any kind of contact of waste water with soils and ground water, and migration of any released materials into groundwater. Hence landfill waste, solid waste, soil contamination, and water contamination are eliminated.

[0046] Further, as the waste matter can be sucked out of the second container at regular intervals the containment process of the flowback fluids can be carried out on a continuous basis without interrupting the wellbore operations. Furthermore, as the components of the system such as first container, the second container, the at least one heating unit and the one or more pipelines are demountable and transportable components, the method (600) can be performed for multiple on-shore oil well and gas well operations using the same components, thereby making the process of containment economical and environment friendly. Furthermore, disclosed system occupies a small area of land thereby causing zero secondary pollution.

[0047] The table below illustrates various components of the system and corresponding reference numerals.

[0048] The foregoing description of the disclosed embodiments reveal the general nature of the embodiments herein that others can, by applying common general knowledge, readily modify and/or adapt for various applications and specific embodiments without departing from the generic concept. Hence such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein are preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

[0049] Furthermore, present disclosure is not limited to disclosed embodiments. Numerous modifications, changes, variations, substitutions and equivalents will be apparent to those skilled in the art, without parting from the scope of the present disclosure. The accompanying figures are used to help easily understand various technical features and it should be understood that the alternatives presented herein are not limited by the accompanying figures. As such, the present disclosure should be construed to extend to any alterations, equivalents and substitutes in addition to those which are particularly set out in the accompanying figures. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are generally only used to distinguish one element from another.

Claims

What is claimed is

1. A system for containment of flowback fluids of a wellbore, the system comprising: one or more pipelines (108a-108b) extending from a wellhead (126) of the wellbore to carry the flowback fluids, wherein the flowback fluids comprise waste matter and waste gases; a first container (102) to receive the waste matter from at least one pipeline (108a) that carries the waste matter from the wellhead (126), wherein a mechanical structure (112) of the first container (102) is adapted to reduce a speed of waste fluids present in the waste matter received from the at least one pipeline (108a); at least one heating unit (106) arranged at a portion of the first container (102) to: receive the waste gases from at least one pipeline (108b), wherein the at least one pipeline (108b) carries the waste gases from the wellhead (126), and bum the waste gases into non-combustible byproducts; and a second container (104), coupled to the first container (102), to receive the waste matter from the first container (102).

2. The system as claimed in claim 1, wherein the first container (102) is placed in line with a ground level and the second container (104) is placed in a flare pit (128) constructed at a predetermined depth below the ground level.

3. The system as claimed in claim 1, wherein the first container (102) is layered with a plurality of refractory bricks configured to withstand heat generated during burning of the waste gases.

4. The system as claimed in claim 1, wherein the mechanical structure (112), is one of a perpendicular and an inclined wall adapted to reduce a pressure of the waste fluids prior to collection of the waste fluids in the second container (104)

5. The system as claimed in claim 1, wherein the second container (104) further comprises: a valve configured to discharge the waste matter from the second container (104) into a hose (110), wherein the hose (110) is configured to carry the waste matter from the valve into a storage tank (124) via a pump (122). The system as claimed in claim 1, further comprises: one or more floating sticks coupled to the second container (104), wherein the one or more floating sticks include one or more reflecting colors for monitoring a fluid level of the waste matter in the second container (104). The system as claimed in claim 1, wherein a length, a width and a height of the second container (104) is 12 meter (m), 3m and 2.3m, respectively; and wherein a length, a width and a height of the mechanical structure (112) is 13m, 2.5m and 1.7m, respectively. The wastewater treatment system as claimed in claim 1, wherein the second container (104) is coated with a chemical and a fire resistant material. The system as claimed in claim 1, wherein the at least one heating unit (106) is operated up to 1500 Celsius. The system as claimed in claim 1, wherein the second container (104) comprises: an access (120)+ with an abutment(s) (130) installed at a top portion of the second container (104) for holding the hose (110) to facilitate sucking of the waste matter. A method (600) for containing flowback fluids of a wellbore, wherein the flowback fluids comprise waste matter and waste gases, the method comprising: provisioning a first container (102) having an inbuilt mechanical structure (112) for receiving the waste matter from at least one pipeline (108a) that carries the waste matter from a wellhead (126) of the wellbore, wherein the inbuilt mechanical structure (112) is adapted to reduce a speed of waste fluids present in the waste matter; coupling a second container (104) to the first container (102), wherein the second container (104) is configured to receive the waste matter from the first container (102); and arranging at least one heating unit (106) at a portion of the first container (102) to: receive the waste gases from at least one pipeline (108b), wherein the at least one pipeline (108 a) is configured to carry waste gases from the wellhead (126), and bum the gases into non-combustible byproducts.

12. The method (600) as claimed in claim 11, wherein the first container (102) is placed in line with a ground level and the second container (104) is placed in a flare pit (128) constructed at a predetermined depth below the ground level.

13. The method (600) as claimed in claim 11, wherein the mechanical structure (112), is an inclined wall, adapted to reduce a pressure of the waste fluids in order to facilitate collection of the waste matter at an opening provided within a base of the first container (102), wherein the opening is coupled to the second container (104) and allows flow of the waste matter from the first container (102) to the second container (104).

14. The method (600) as claimed in claim 11, further comprising: layering an inner surface of the first container (102) with a plurality of refractory bricks to withstand the heat generated during burning of the waste gases.

15. The method (600) as claimed in claim 11, further comprising: facilitating a discharge of the waste matter from a valve of the second container (104) into a hose (110), wherein the hose (110) is configured to carry the waste matter from the valve to a storage tank (124) via a pump (122); and coupling one or more floating sticks to the second container (104), wherein the one or more floating sticks include one or more reflecting colors for monitoring a fluid level in the second container (104).

16. The method (600) as claimed in claim 11, further comprises: installing an access with an abutment(s) (130) at a top of the second container (104) for holding the hose (110) to facilitate sucking of the waste matter.