WO1995014543A1 - Procede de mise au rebut de dechets de forage - Google Patents

Procede de mise au rebut de dechets de forage Download PDF

Info

Publication number
WO1995014543A1
WO1995014543A1 PCT/US1994/013712 US9413712W WO9514543A1 WO 1995014543 A1 WO1995014543 A1 WO 1995014543A1 US 9413712 W US9413712 W US 9413712W WO 9514543 A1 WO9514543 A1 WO 9514543A1
Authority
WO
WIPO (PCT)
Prior art keywords
drilling
disposal
wellbore
casing string
formation
Prior art date
Application number
PCT/US1994/013712
Other languages
English (en)
Inventor
Alfred Roy Jennings, Jr.
Original Assignee
Mobil Oil Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mobil Oil Corporation filed Critical Mobil Oil Corporation
Publication of WO1995014543A1 publication Critical patent/WO1995014543A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • B09B1/008—Subterranean disposal, e.g. in boreholes or subsurface fractures

Definitions

  • a Method for Disposing of Drilling Wastes This invention relates to a method for difposing of drilling wastes. More particularly, the invention relates to a method for disposing of drilling wastes into an earth formation that is of a composition that will contain the drilling wastes and which earth formation is penetrated by the wellbore and located above a drill bit used in forming the wellbore.
  • a wellbore In order to form a well in the earth a wellbore is drilled into the earth and is completed as a well. This is frequently done for the purpose of recovering hydrocarbon fluids from subterranean formations though it may also be desirable to form wells into the earth for other purposes such as, for example, for recovering helium, sulphur, salts, such as sodium chloride, or for forming wells that penetrate a formation or zone in the earth subsurface that is to be used for purposes such as for storage of gases including hydrocarbon gases, hydrocarbon liquids or other liquids and gasses.
  • drilling fluids are used to facilitate the drilling process.
  • the drilling fluids may liquid, gaseous or modifications thereof such as foam.
  • the base for liquid drilling fluids is often aqueous or oil.
  • Drilling fluids are often referred to as drilling muds and may be referred to more specifically as water based drilling muds, oil based drilling muds, gas and foam drilling fluids or muds.
  • drilling fluids In the use of drilling fluids the fluids are circulated between the earth surface and the lower portion of the wellbore for such purposes as cooling the drilling bit and removing cuttings made by the bit from the wellbore, as well as for other well known purposes such as for stabilization of the wellbore. Additives are included in the drilling fluids to obtain desired characteristics of the fluids. For convenience throughout this document drilling fluids may be referred to generically as drilling muds or sometimes as muds. In the drilling of wellbores the drilling muds that are used are recovered. These used drilling muds contain materials which may contaminate the environment if not disposed of properly. Efforts have been made to dispose of used drilling muds and other such materials in an environmentally safe manner.
  • Drilling muds are sometimes solidified with cement slurries in mud pits at the surface. Drilling muds and other such materials may be disposed of by pumping the materials into disposal wells.
  • US-A-5108226 there is described a method of disposal of drilling wastes by dispersing the drilling wastes with an aqueous saline solution and injecting the solution into an underground formation and thereafter fracturing the formation to allow continued injection of the drilling wastes at relatively low pressures into the created fractures in the formation.
  • US-A-5109933 and US-A-5129469 there is described a method and system for shearing and grinding drill cuttings to form a viscous slurry and thereafter disposing of the drill cuttings by injecting the viscous slurry into a subsurface formation by way of an annular space formed in a wellbore.
  • US-A-5133624 there is disclosed a method and apparatus for waste disposal by hydraulic embedment in a subterranean formation wherein a wellbore is drilled into a stable geologic formation below the ground, fracturing the formation, pumping a mixture of hazardous waste in solid, liquid, or sludge form in a selected transport medium into the fractured formation, and preventing migration of the waste.
  • a method for disposing of drilling wastes formed when drilling a wellbore comprising:
  • step (b) said first casing string is installed to extend from the earth surface and terminate below said disposal zone.
  • step (b) communication with said disposal zone is provided by incorporating within said casing string a slotted portion and wherein said slotted portion is installed adjacent said disposal zone to provide communication between said disposal zone and said second annulus.
  • step (b) communication with said disposal zone is provided by perforating said first casing string adjacent said disposal zone.
  • step (h) said drilling wastes are injected down a second annulus formed intermediate said first and said second casing string and into said disposal formation. It is preferred that between steps (g) and (h) said drilling wastes are dispersed in an aqueous saline solution thereby forming a drilling waste and saline mixture.
  • the saline solution may comprise sodium chloride, potassium chloride, or produced formation water and mixtures thereof;
  • the drilling wastes comprise drilling fluids, drilled solids, drilling muds or mixtures thereof.
  • the drilling may be carried out using conventional drilling techniques.
  • the suitable earth formation should be one that can accept the drilling wastes, either in its present state or one that can be hydraulically fractured.
  • Unconsolidated formations such as unconsolidated sands, sandstone and carbonate formations can accept drilling wastes, either in their in situ state, or after hydraulically fracturing or other types of treatments, such as acidizing.
  • the suitable earth formation should preferably be one that will contain the drilling wastes in the sense of being a formation from which the drilling wastes will not migrate to other formations and pollute sensitive formations such as fresh water formations.
  • Another characteristic of the suitable earth formation for receiving drilling wastes is that it must be located uphole, that is above the lower end of the wellbore during drilling operations. Such a suitable earth formation may hereafter be referred as a disposal zone.
  • the practices of the present invention utilizes many of the features described in US-A-5108226.
  • an- aqueous slurry containing drilling wastes is prepared.
  • the drilling wastes are obtained as a result of drilling holes or wellbores into the earth for the purpose of producing hydrocarbonaceous fluids, hereinafter often referred to as hydrocarbons or hydrocarbon fluids, therefrom.
  • the drilling wastes result from circulating a drilling mud or drilling fluid intermediate the surface of the earth and the bottom of the wellbore during drilling operations.
  • the drilling fluid cools and lubricates the drilling bit and lifts earthen material, which may hereinafter be referred to as drill cuttings, out of the wellbore.
  • the drilling fluid may comprise water or oil as a base, additives to increase its viscosity and density, and other additives to achieve desired characteristics of the drilling fluid.
  • a wellbore 1 extending from the surface 3 of the earth and penetrating subsurface formations 5, 7, 9, 11 and 13 thereof.
  • the wellbore 1 penetrates formation 5 which overlies a formation 7.
  • Formation 7 has characteristics that enable the formation to accept and contain drilling wastes. This formation 7 is referred a disposal formation or a disposal zone.
  • the wellbore 1 penetrates formation 9 and formation 11 which underlie formation 7 and extends into formation 13.
  • a drill string 15 is used with a drill bit 17 attached to the lower end thereof.
  • the wellbore 1 is extended into the earth to penetrate the subsurface formations thereof by means of conventional drilling techniques.
  • a casing string 19 is installed in the wellbore 1 such that it extends from above the boundary of formation 5 and disposal formation 7 through disposal formation 7 and below the boundary of disposal formation 7 and formation 9.
  • the casing string 19 will normally extend upward to the surface 3 of the earth.
  • the casing string 19 is installed in the wellbore 1 using conventional techniques, for example by cementing the casing string 19 in the wellbore 1, whereby a cement casing sheath 21 is" formed about the casing string 19 and intermediate the formations 5, 7 and 9 such that the casing string 19 is held in the wellbore 1.
  • the casing sheath 21 seals the annulus that exists intermediate the casing string 19 and the wall of the wellbore 1 and prevents fluid communication between disposal formation 7 and overlying formation 5 and underlying formation 9.
  • Perforations 23 are formed through casing string 19 and casing sheath 21 and adjacent disposal formation 7 using conventional perforating techniques to provide for fluid communication intermediate formation 7 and the interior of wellbore 1. Such fluid communication may be provided by other conventional techniques such as by use of slotted casing in conjunction with the appropriate placement of cement used in cementing the casing in place.
  • the wellbore 1 is extended further into the earth, as shown through formations 9 and 11, and a second casing string 25 is installed in the wellbore thereby forming an annulus intermediate the drill string 15 and the second casing string 25.
  • the wellbore 1 is further extended into formation 13 by conventional drilling techniques whereby the drill bit 17 cuts into the earth thereby forming drill cuttings.
  • Drilling fluid 29 is circulated intermediate the surface of the earth 3 and the bottom of the wellbore 1 via the interior of the drill string 15, the annulus formed intermediate the drill string 15 and the second casing string 25 and openings (not shown) in or around the drill bit 17 to remove the drill cuttings from the wellbore.
  • the drilling fluid is treated, not shown, at the earth surface to remove drilling wastes therefrom.
  • the drilling wastes are pumped down the wellbore 1 via a second annulus formed intermediate the first and second'casing strings 19 and 25, and out through perforations 23 and into disposal formation 7.
  • a wellbore in the earth formations that extends from the earth surface and through a disposal zone.
  • a first casing string is installed in the wellbore to extend through the disposal formation and communicate with the disposal zone and terminate below said disposal formation.
  • the wellbore is extended into the earth below said first casing string and a second casing string is installed in the wellbore to extend from the earth surface to a location below the terminal end of the first casing string.
  • the wellbore is extended into the earth below said second casing string by conventional drilling techniques wherein a drill string with a drill bit attached to the lower end thereof is employed to cut into the earth thereby forming drill cuttings and drilling fluid is circulated down said drill string and around said drill bit to entrain the drill cuttings and flow the drill cuttings up a first annulus formed intermediate the drill string and the second casing string to the surface of the earth.
  • the drilling fluid is treated at the earth surface to remove drilling wastes therefrom and the drilling wastes are dispersed with an aqueous saline solution thereby forming a drilling waste and saline mixture, and the mixture is injected into said disposal zone.
  • the drilling wastes that are dispersed into the aqueous saline solution may comprise drilling fluids, drilled solids, drill cuttings, or drilling muds and mixtures thereof and the saline solution my comprise sodium chloride, potassium chloride, or produced formation water and mixtures thereof.
  • the disposal zone is hydraulically fractured so as to allow continued injection of said drilling wastes at relatively low pressures into a created fracture in said disposal zone, and is and is thereafter repeatedly hydraulically fractured to reestablish communication with the disposal zone whenever a "skin" builds up due to filtration of solids within said formation.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Procédé pour la mise au rebut de déchets de forage dans le forage même, dans une zone de mise au rebut (7), pendant le forage d'un puits (1). Ce procédé permet de mettre au rebut les déchets de forage comme on le souhaite, de façon continue ou par intermittence, pendant le forage d'un puits (1). Ce procédé permet également d'isoler la zone de mise au rebut (7) du forage (1) pendant une étape d'achèvement, au cours de l'achèvement du puits (1).
PCT/US1994/013712 1993-11-29 1994-11-28 Procede de mise au rebut de dechets de forage WO1995014543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15833493A 1993-11-29 1993-11-29
US158,334 1993-11-29

Publications (1)

Publication Number Publication Date
WO1995014543A1 true WO1995014543A1 (fr) 1995-06-01

Family

ID=22567649

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/013712 WO1995014543A1 (fr) 1993-11-29 1994-11-28 Procede de mise au rebut de dechets de forage

Country Status (1)

Country Link
WO (1) WO1995014543A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041727A1 (fr) * 1997-03-14 1998-09-24 Shell Internationale Research Maatschappij B.V. Procede d'appauvrissement en dechets du petrole brut ou du gaz
GB2327958A (en) * 1997-08-01 1999-02-10 Jeffrey Reddoch A method of injecting drilling waste into a well while drilling
AU714524B2 (en) * 1997-03-14 2000-01-06 Shell Internationale Research Maatschappij B.V. Waste component removal from crude oil or gas
US6021847A (en) * 1997-03-14 2000-02-08 Shell Oil Company Removing a waste component from a hydrocarbon fluid
US9656308B2 (en) 2015-07-10 2017-05-23 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US9925572B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Devices, systems, and processes for cleaning the interiors of frac tanks
US10589287B2 (en) 2015-07-10 2020-03-17 NGL Solids Solutions, LLC Systems and methods for oil field solid waste processing for re-injection
US11911732B2 (en) 2020-04-03 2024-02-27 Nublu Innovations, Llc Oilfield deep well processing and injection facility and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US133624A (en) * 1872-12-03 Improvement in shuttle-checks for looms
US5109933A (en) * 1990-08-17 1992-05-05 Atlantic Richfield Company Drill cuttings disposal method and system
US5226749A (en) * 1992-07-08 1993-07-13 Atlantic Richfield Company Waste disposal in hydraulically fractured earth formations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US133624A (en) * 1872-12-03 Improvement in shuttle-checks for looms
US5109933A (en) * 1990-08-17 1992-05-05 Atlantic Richfield Company Drill cuttings disposal method and system
US5226749A (en) * 1992-07-08 1993-07-13 Atlantic Richfield Company Waste disposal in hydraulically fractured earth formations

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6048462A (en) * 1997-03-14 2000-04-11 Shell Oil Company Waste component removal from crude oil or gas
WO1998041727A1 (fr) * 1997-03-14 1998-09-24 Shell Internationale Research Maatschappij B.V. Procede d'appauvrissement en dechets du petrole brut ou du gaz
AU714524B2 (en) * 1997-03-14 2000-01-06 Shell Internationale Research Maatschappij B.V. Waste component removal from crude oil or gas
GB2338973A (en) * 1997-03-14 2000-01-12 Shell Int Research Waste component removal from crude oil or gas
US6021847A (en) * 1997-03-14 2000-02-08 Shell Oil Company Removing a waste component from a hydrocarbon fluid
EP1000219A1 (fr) * 1997-08-01 2000-05-17 Jeffrey Reddoch Technique d'injection de debris de forage dans un puits pendant le forage
GB2327958A (en) * 1997-08-01 1999-02-10 Jeffrey Reddoch A method of injecting drilling waste into a well while drilling
EP1000219A4 (fr) * 1997-08-01 2000-06-28 Jeffrey Reddoch Technique d'injection de debris de forage dans un puits pendant le forage
GB2327958B (en) * 1997-08-01 2000-08-23 Jeffrey Reddoch A method of injecting drilling waste into a well while drilling
US9656308B2 (en) 2015-07-10 2017-05-23 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US9925573B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US9925572B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Devices, systems, and processes for cleaning the interiors of frac tanks
US10589287B2 (en) 2015-07-10 2020-03-17 NGL Solids Solutions, LLC Systems and methods for oil field solid waste processing for re-injection
US11911732B2 (en) 2020-04-03 2024-02-27 Nublu Innovations, Llc Oilfield deep well processing and injection facility and methods

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