US20020189864A1 - Method for the drilling of oil wells - Google Patents

Method for the drilling of oil wells Download PDF

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Publication number
US20020189864A1
US20020189864A1 US10/168,526 US16852602A US2002189864A1 US 20020189864 A1 US20020189864 A1 US 20020189864A1 US 16852602 A US16852602 A US 16852602A US 2002189864 A1 US2002189864 A1 US 2002189864A1
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US
United States
Prior art keywords
drilling
well
curvature
hole
oil wells
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US10/168,526
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English (en)
Inventor
Angelo Calderoni
Gualtiero Ferrario
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eni SpA
Original Assignee
Eni SpA
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 Eni SpA filed Critical Eni SpA
Assigned to ENI S.P.A. reassignment ENI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CALDERONI, ANGELO, FERRARIO, GUALTIERO
Publication of US20020189864A1 publication Critical patent/US20020189864A1/en
Abandoned legal-status Critical Current

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    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions

Definitions

  • the present invention relates to an improved method for the drilling of oil wells which allows the positioning of lining columns, operating with an almost constant clearance for the whole of the desired well depth and which substantially consists in effecting the drilling, guaranteeing the elimination of any geometrical curvature and irregularities of the hole, whether it be vertical or deviated.
  • lining operations of the hole are effected which comprise the positioning of appropriate casings at pre-established intervals in relation to the depth reached and characteristics of the formations penetrated.
  • the clearance between casing and hole can vary from values of about 6-7 inches (15-16 cm) for the surface and/or intermediate phases, to values of almost an inch for the deeper phases (for example: 26′′ hole for 20′′ conductor pipe, 171 ⁇ 2 hole for 133 ⁇ 8′′ , 121 ⁇ 4′′ hole for 95 ⁇ 8′′ casing, 81 ⁇ 2′′ hole for 7′′ casing).
  • the drilling method according to the present invention allows, with the same diameter of the production column, the dimensions of the upper well part (surface and intermediate columns) to be reduced. This enables a significant reduction in the consumption of materials (mud, cement and steel) and consequently the production of waste products.
  • This technique also avoids the necessity of producing holes with a diameter which is too large with respect to the diameter of the columns to be lowered, which generally implies the possibility of effecting holes with a smaller diameter compared to the conventional technique. All of this positively influences the advancement rate of the bit therefore allowing the production times of the holes to be reduced, with a consequent decrease in the costs.
  • the technique according to the present invention also enables a significant reduction in the operating costs, as the verticality and/or regular curvature of the well facilitates all workover and well intervention operations.
  • This method comprises a drilling and pipe-laying technique which allows the positioning of the lining columns operating with an almost constant clearance with values of more or less 1.5 inches (3-4 cm) for the whole well depth (from the top to the bottom), or in any case for the whole of the desired well depth.
  • a reduced clearance allows, with the same number of columns and final diameter of the production casing, the dimensions of the upper part of the well to be greatly reduced.
  • An object of the present invention therefore relates to an improved method for the drilling of oil wells and for the contemporaneous positioning of appropriate casings, characterized in that the clearance is kept almost constant for the whole of the desired well depth, consisting in drilling the well section of interest, maintaining a high degree of hole regularity by the use of automatic verticality and/or curvature control equipment.
  • the method according to the following invention comprises effecting the drilling phase according to the following procedures:
  • the pipe-laying procedure is effected as follows.
  • curvature should be planned in relation to the flexibility of the casings to be used.
  • FIG. 1 compares the conventional pipe-laying program with the “Lean” program.
  • the data in said figure were obtained in the Monte Enoc 9 well effected in the Field of Val D'Agri in Basilicata. It is evident how with the “Lean” solution, starting from a lower diameter of the surface and intermediate columns, a production column is obtained with the same diameter as that produced with the conventional solution.
  • FIG. 2 describes a further two examples of Lean pipe-laying, which can provide a valid alternative to the previous scheme, above all in contingency situations.
  • FIG. 3 schematically represents a comparison between the hole sections.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Steroid Compounds (AREA)
US10/168,526 2000-01-05 2000-12-28 Method for the drilling of oil wells Abandoned US20020189864A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MI000007A IT1316157B1 (it) 2000-01-05 2000-01-05 Metodo migliorato per la perforazione di pozzi petroliferi
ITMI2000A000007 2000-01-05

Publications (1)

Publication Number Publication Date
US20020189864A1 true US20020189864A1 (en) 2002-12-19

Family

ID=11443623

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/168,526 Abandoned US20020189864A1 (en) 2000-01-05 2000-12-28 Method for the drilling of oil wells

Country Status (13)

Country Link
US (1) US20020189864A1 (it)
EP (1) EP1244866A1 (it)
CN (1) CN1420958A (it)
AU (1) AU3367601A (it)
BR (1) BR0016888A (it)
CA (1) CA2396282A1 (it)
EA (1) EA200200605A1 (it)
IT (1) IT1316157B1 (it)
MA (1) MA25880A1 (it)
MX (1) MXPA02006734A (it)
NO (1) NO20023169L (it)
OA (1) OA12135A (it)
WO (1) WO2001053655A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090133937A1 (en) * 2007-05-29 2009-05-28 Baker Hughes Incorporated Cutting tools and methods of making the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7661476B2 (en) * 2006-11-15 2010-02-16 Exxonmobil Upstream Research Company Gravel packing methods
ITMI20131733A1 (it) 2013-10-17 2015-04-18 Eni Spa Procedimento per realizzare un pozzo per sfruttare un giacimento sotto un fondale marino o oceanico
CN111852336B (zh) * 2020-08-27 2021-10-29 安徽建筑大学 一种水平定向钻扩孔用钻具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077657A (en) * 1976-03-22 1978-03-07 Smith, International, Inc. Adjustable bent sub
US6290001B1 (en) * 2000-05-18 2001-09-18 Halliburton Energy Services, Inc. Method and composition for sweep of cuttings beds in a deviated borehole
US6513606B1 (en) * 1998-11-10 2003-02-04 Baker Hughes Incorporated Self-controlled directional drilling systems and methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9204910D0 (en) * 1992-03-05 1992-04-22 Ledge 101 Ltd Downhole tool
GB9605801D0 (en) * 1996-03-20 1996-05-22 Head Philip A casing and method of installing the casing in a well and apparatus therefore
DK1044316T3 (da) * 1997-12-31 2002-11-04 Shell Int Research Fremgangsmåde til boring og færdiggørelse af en carbonhydridproduktionsbrønd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077657A (en) * 1976-03-22 1978-03-07 Smith, International, Inc. Adjustable bent sub
US6513606B1 (en) * 1998-11-10 2003-02-04 Baker Hughes Incorporated Self-controlled directional drilling systems and methods
US6290001B1 (en) * 2000-05-18 2001-09-18 Halliburton Energy Services, Inc. Method and composition for sweep of cuttings beds in a deviated borehole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090133937A1 (en) * 2007-05-29 2009-05-28 Baker Hughes Incorporated Cutting tools and methods of making the same
US7857078B2 (en) 2007-05-29 2010-12-28 Baker Hughes Incorporated Cutting tools and methods of making the same
US20110062627A1 (en) * 2007-05-29 2011-03-17 Baker Hughes Incorporated Cutting tools and methods of making the same

Also Published As

Publication number Publication date
MXPA02006734A (es) 2002-10-23
ITMI20000007A0 (it) 2000-01-05
WO2001053655A1 (en) 2001-07-26
BR0016888A (pt) 2002-10-08
MA25880A1 (fr) 2003-10-01
OA12135A (en) 2006-05-05
EP1244866A1 (en) 2002-10-02
CA2396282A1 (en) 2001-07-26
NO20023169D0 (no) 2002-06-28
NO20023169L (no) 2002-07-02
CN1420958A (zh) 2003-05-28
EA200200605A1 (ru) 2003-02-27
IT1316157B1 (it) 2003-04-03
ITMI20000007A1 (it) 2001-07-05
AU3367601A (en) 2001-07-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ENI S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CALDERONI, ANGELO;FERRARIO, GUALTIERO;REEL/FRAME:013098/0364

Effective date: 20020620

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION