WO2009158340A2 - Procédé de forage de puits amélioré pour empêcher une perte de circulation de boues de forage - Google Patents

Procédé de forage de puits amélioré pour empêcher une perte de circulation de boues de forage

Info

Publication number
WO2009158340A2
WO2009158340A2 PCT/US2009/048264 US2009048264W WO2009158340A2 WO 2009158340 A2 WO2009158340 A2 WO 2009158340A2 US 2009048264 W US2009048264 W US 2009048264W WO 2009158340 A2 WO2009158340 A2 WO 2009158340A2
Authority
WO
WIPO (PCT)
Prior art keywords
drilling
fibrillated
borehole
polypropylene fibers
drilling fluid
Prior art date
Application number
PCT/US2009/048264
Other languages
English (en)
Other versions
WO2009158340A3 (fr
Inventor
Brian Dempsey
Wade Duty
Original Assignee
Brian Dempsey
Wade Duty
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 Brian Dempsey, Wade Duty filed Critical Brian Dempsey
Publication of WO2009158340A2 publication Critical patent/WO2009158340A2/fr
Publication of WO2009158340A3 publication Critical patent/WO2009158340A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • C09K8/035—Organic additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/504—Compositions based on water or polar solvents
    • C09K8/506—Compositions based on water or polar solvents containing organic compounds
    • C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/003—Means for stopping loss of drilling fluid
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/08—Fiber-containing well treatment fluids

Definitions

  • the present invention relates to a method for stopping the loss of drilling fluid circulating in well bores, and, more particularly, to the prevention of lost circulation due to all causes during directional, i.e., non-vertical, drilling in subterranean formations.
  • the initial vertical portion of a directional, or horizontal, well is typically drilled using the same rotary drilling technique that has been used to drill most vertical wells, wherein the drill string is rotated at the surface.
  • the drill string consists of many joints of steel alloy pipe, drill collars, and the drill bit itself.
  • the current generation of horizontal drilling capability that can attain longer, deeper and more accurate placement of multiple horizontal well bores has also produced new problems in adapting conventional drilling fluids to overcome situations of lost circulation and/or debris removal in non-vertical bore holes.
  • Lost circulation can occur as seepage losses, i.e., a slow, steady loss of drilling fluid into the zone during the process of drilling a well; or it can occur as a partial loss of fluid wherein drilling mud introduced into the borehole is, for whatever reason, simply not capable of being recovered; or the loss of drilling fluid can be an immediate, catastrophic loss that can result from a fracture in a given subterranean zone.
  • the nature of horizontal drilling also produces new problems in that debris may gradually form into sediment along the bottom section of the elongated borehole which, in turn, tends to reduce drilling fluid circulation and requires more pressure to be exerted for the drilling fluid to continue flowing properly. Increased pressure, however, can also cause ruptures in the mud cake surrounding the borehole, which may also lead to significant drilling fluid losses due to subterranean zone fracture.
  • the present invention is an improved well drilling method for drilling in subterranean formations wherein a drilling fluid is injected into a drill string having a bottom hole assembly inserted into a borehole and the borehole can deviate from a vertical orientation by as much as 90 degrees.
  • the improvement comprises incorporating into the drilling fluid an effective amount of fibrillated hydrophobic polypropylene fibers and injecting the fluid and fiber combination, i.e., the suspension, into the borehole whereby debris is more efficiently swept from the borehole and seepage, i.e., lost circulation, of drilling fluid into the subterranean formation is simultaneously reduced and/or eliminated.
  • the present invention is an improved method for simultaneously sweeping debris from a borehole and reducing seepage and/or lost circulation into subterranean formations using a circulating drilling fluid or drilling mud.
  • the invention is particularly applicable in a directional drilling process wherein the orientation of the borehole in the subterranean formation can deviate from vertical by as much as 90 degrees, i.e., the borehole curves from vertical and can become horizontal.
  • the improved method comprises incorporating into the drilling fluid an effective amount of fibrillated hydrophobic polypropylene fibers to form a suspension, optionally with one or more other additives, and then circulating the suspension through the borehole.
  • the optional one or more other additives may be incorporated directly into the suspension of fibrillated hydrophobic polypropylene fibers, or they may be circulated through the borehole in succession, depending on the particular drilling situation encountered.
  • An effective amount of fibrillated hydrophobic polypropylene fibers can vary over a wide range depending on many factors known to those skilled in the art of conventional and directional drilling, e.g., drilling fluid engineers, but typically the amount may range from 1.5 lbs (0.68 kg) up to 50 lbs (22.7 kg) of fibrillated hydrophobic polypropylene fibers per joint of pipe in the drill string.
  • the invention is effective is controlling all situations of lost circulation, such as more gradual seepage losses, i.e., a slow, steady loss of drilling fluid into the zone during the process of drilling a well; or the loss of drilling fluid that may result from any other cause, such as an immediate, catastrophic loss event, e.g., an unexpected fracture in a given subterranean zone.
  • Fig. 1 is a sectional elevation view of a directional well in comparison to a vertical well.
  • the present invention is an improved well drilling method particularly suited for directional drilling in subterranean formations wherein an effective amount of fibrillated hydrophobic polypropylene fibers is incorporated into the drilling fluid to form a suspension, and the fluid and fiber suspension is injected into the drill string having a bottom hole assembly inserted into the borehole. Debris is swept from the borehole and seepage of drilling fluid into the subterranean formation is reduced.
  • Drilling fluid or "mud” is a vital part of drilling operations. Its composition, which can vary over a wide range during any drilling operation depending on peculiarities in the subterranean formation being drilled, is continually evaluated based on many factors. The composition needs to be selected to almost simultaneously provide (i) appropriate hydrostatic pressure on the borehole wall to prevent uncontrolled production of reservoir fluids, (ii) lubrication and cooling of the drill bit, (iii) carrying or “sweeping" of the drill cuttings from the bottom of the borehole up to the surface, and (iv) consistency for forming a "mud-cake" on the interior surface of the borehole. Sealing the interior surface of the borehole can be critical to prevent drilling fluid invasion of, or seepage into, the surrounding subterranean formation.
  • the mud tends to accumulate small particles of the rocks which are being drilled through, and its properties can change.
  • One of the most important mud properties is the mud weight, i.e., density. If the mud exceeds the fracture pressure of the formation being drilled, the formation may fracture, or fracture prematurely, and large quantities of mud can be lost into the formation. This is a situation that is more typically referred to as "lost circulation", and lost circulation, which can occur unexpectedly without prior warning, has been observed to be particularly troublesome to correct in horizontal drilling operations.
  • the term "lost circulation” is intended to broadly cover all fluid loss situations that can occur, including seepage losses, i.e., a slow, steady loss of drilling fluid into the zone during the process of drilling a well; or a partial loss of fluid wherein drilling mud introduced into the borehole is, for whatever reason, simply not capable of being recovered; and the catastrophic loss of drilling fluid that can result from a fracture in a given zone.
  • the initial vertical portion 10 of a horizontal well A is typically drilled using the same rotary drilling technique that is used to drill most vertical wells B.
  • the entire drill string is rotated at the surface.
  • the curved section 16 of a horizontal well is drilled using a hydraulic motor mounted directly above the bit and powered by the drilling fluid.
  • the drill bit can be rotated by the hydraulic motor without rotating the drill pipe from the motor to the surface.
  • Current horizontal drilling technique uses a steerable downhole motor (not shown).
  • the hole By orienting the bend in the motor, the hole can be steered around a curve, or bend, from vertical to horizontal, with the curved section typically having a radius of from 300 - 500 feet (91.4 - 152.4 meters).
  • Somewhat unique to horizontal drilling is that debris may gradually form into sediment along the bottom section of the bend and along the bottom section of the elongated horizontal, or near horizontal, borehole which, in turn, tends to reduce the available annular volume for drilling fluid circulation. This reduction in volume translates to requiring more pressure to be exerted for the drilling fluid to continue flowing properly and sweeping debris from the borehole.
  • conditions encountered in horizontal drilling can be quickly and satisfactorily resolved by incorporating into the circulating drilling mud from 1.5 lbs (0.68 kg) up to 50 lbs (22.7 kg) of fibrillated hydrophobic polypropylene fibers per joint of pipe in the drill string.
  • the combination of a conventional drilling fluid with a precise amount of fibrillated hydrophobic polypropylene fibers is directed, i.e., forced, through sections of the well bore where a condition of lost circulation or sweeping difficulty has been detected.
  • the fibrillated hydrophobic polypropylene fibers form a suspension in the drilling mud that is freely pumpable.
  • the fibers have been observed to exhibit a structural stiffness that is capable of forming a fibrous mat in the region of lost circulation to thereby seal the void.
  • the tendency for debris to form into sediment along the bend and elongated sections of a directional borehole has also been overcome using the fiber suspension of the invention, with or without optional additives, in place of a conventional drilling mud.
  • the suspension of fibrillated hydrophobic polypropylene fibers is first circulated through the well bore.
  • the results are closely monitored, and if they are not completely satisfactory, the suspension of fibrillated hydrophobic polypropylene fibers is followed by one or more suspensions of other additives selected from the group consisting of cedar fibers, mica, cotton seed hulls and mixtures of such additives.
  • the order in which the suspensions of other additives are circulated through the well bore is not critical, and will be selected depending on the analysis of subterranean formation being drilled.
  • the term "fibrillated” is intended to mean that the fiber has been abraded and fibrils have been created along the fiber's length.
  • the fibers contemplated for use according to the invention may also be referred to as fibrillated fibrous structures.
  • a fiber tow is chopped to a specific length, usually in the range of about 1 millimeter to about 8 millimeters, although the length can vary over a wide range.
  • the chopped fibers are fibrillated in a device having characteristics similar to a blender, or on a large scale, in machines commonly referred to as a "hi-low", a "beater” or a "refiner".
  • the fiber is subjected to repetitive stresses, while further chopping and the reduction of fiber length is minimized.
  • a preferred fibrillated fiber for use according to the invention is a 100 percent virgin homopolymer polypropylene fibrillated fiber available commercially as FIBERMESH® 300 Synthetic Fiber from Propex Concrete Systems.
  • the polypropylene fibrillated fiber is hydrophobic and contains no reprocessed olefin materials.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un procédé de forage de puits amélioré permettant de forer de manière directionnelle dans des formations souterraines, qui consiste à incorporer dans le liquide de forage une quantité effective de fibres de polypropylène hydrophobe fibrillées pour former une suspension et à injecter ladite suspension dans le train de tiges de forage, les débris étant balayés du puits de forage et le suintement du liquide de forage dans la formation souterraine étant réduit.
PCT/US2009/048264 2008-06-25 2009-06-23 Procédé de forage de puits amélioré pour empêcher une perte de circulation de boues de forage WO2009158340A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/145,803 US20090321142A1 (en) 2008-06-25 2008-06-25 Well Drilling Method for Prevention of Lost Circulation of Drilling Muds
US12/145,803 2008-06-25

Publications (2)

Publication Number Publication Date
WO2009158340A2 true WO2009158340A2 (fr) 2009-12-30
WO2009158340A3 WO2009158340A3 (fr) 2010-05-06

Family

ID=41445261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/048264 WO2009158340A2 (fr) 2008-06-25 2009-06-23 Procédé de forage de puits amélioré pour empêcher une perte de circulation de boues de forage

Country Status (2)

Country Link
US (1) US20090321142A1 (fr)
WO (1) WO2009158340A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2471963C1 (ru) * 2011-08-05 2013-01-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Способ восстановления герметичности обсадных колонн
AU2013404999B2 (en) * 2013-11-05 2017-05-04 Halliburton Energy Services, Inc. Wellbore fluid additives of fibrillated fibers
EP3191301A1 (fr) * 2014-09-10 2017-07-19 Forta Corporation Compositions et procédés pour coulis contenant des fibres

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076344A1 (fr) 2009-12-24 2011-06-30 Services Petroliers Schlumberger Procédés de lutte contre les pertes de circulation dans un puits souterrain et matériaux associés
CN103380239B (zh) 2010-12-15 2015-05-13 3M创新有限公司 受控降解纤维
CN103422823A (zh) * 2012-05-18 2013-12-04 北京格瑞迪斯石油技术有限公司 清洁纤维及使用该纤维洗井的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060096759A1 (en) * 2004-11-05 2006-05-11 Reddy B R Methods and compositions for controlling lost circulation in subterranean operations
US20060201715A1 (en) * 2003-11-26 2006-09-14 Seams Douglas P Drilling normally to sub-normally pressured formations
US20080110627A1 (en) * 2003-05-13 2008-05-15 Roger Keese Well Treating Method to Prevent or Cure Lost-Circulation
US7384892B2 (en) * 2004-07-22 2008-06-10 Hercules Incorporated Water-based drilling fluids

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217965A (en) * 1979-08-21 1980-08-19 Cremeans Jim G Method for preventing fluid loss during drilling
US6016872A (en) * 1997-03-17 2000-01-25 Forta Corporation Method for removing debris from a well-bore
US6085844A (en) * 1998-11-19 2000-07-11 Schlumberger Technology Corporation Method for removal of undesired fluids from a wellbore
US6419019B1 (en) * 1998-11-19 2002-07-16 Schlumberger Technology Corporation Method to remove particulate matter from a wellbore using translocating fibers and/or platelets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080110627A1 (en) * 2003-05-13 2008-05-15 Roger Keese Well Treating Method to Prevent or Cure Lost-Circulation
US20060201715A1 (en) * 2003-11-26 2006-09-14 Seams Douglas P Drilling normally to sub-normally pressured formations
US7384892B2 (en) * 2004-07-22 2008-06-10 Hercules Incorporated Water-based drilling fluids
US20060096759A1 (en) * 2004-11-05 2006-05-11 Reddy B R Methods and compositions for controlling lost circulation in subterranean operations

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2471963C1 (ru) * 2011-08-05 2013-01-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Способ восстановления герметичности обсадных колонн
AU2013404999B2 (en) * 2013-11-05 2017-05-04 Halliburton Energy Services, Inc. Wellbore fluid additives of fibrillated fibers
EP3191301A1 (fr) * 2014-09-10 2017-07-19 Forta Corporation Compositions et procédés pour coulis contenant des fibres
EP3191301A4 (fr) * 2014-09-10 2018-06-06 Forta Corporation Compositions et procédés pour coulis contenant des fibres
US10035942B2 (en) 2014-09-10 2018-07-31 Forta Corporation Compositions and methods for fiber-containing grout
US10344196B2 (en) 2014-09-10 2019-07-09 Forta Corporation Compositions and methods for fiber-containing grout

Also Published As

Publication number Publication date
WO2009158340A3 (fr) 2010-05-06
US20090321142A1 (en) 2009-12-31

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