Method of deep drilling
Abstract
Deep drilling is facilitated by the following steps practiced separately or in any combination: (1) Periodically and sequentially fracturing zones adjacent the bottom of the bore hole with a thixotropic fastsetting fluid that is accepted into the fracture to overstress the zone, such fracturing and injection being periodic as a function of the progression of the drill. (2) Casing the bore hole with ductile, pre-annealed casing sections, each of which is run down through the previously set casing and swaged in situ to a diameter large enough to allow the next section to run down through it. (3) Drilling the bore hole using a drill string of a low density alloy and a high density drilling mud so that the drill string is partially floated.
- Inventors:
-
- 4616 Ridgeway, Los Alamos, NM 87544
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 865257
- Patent Number(s):
- 4483399
- Assignee:
- Colgate, Stirling A. (4616 Ridgeway, Los Alamos, NM 87544)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; deep; drilling; facilitated; following; steps; practiced; separately; combination; periodically; sequentially; fracturing; zones; adjacent; bottom; bore; thixotropic; fastsetting; fluid; accepted; fracture; overstress; zone; injection; periodic; function; progression; drill; casing; ductile; pre-annealed; sections; run; previously; set; swaged; situ; diameter; allow; section; string; density; alloy; mud; partially; floated; drilling mud; drill string; following steps; deep drilling; /166/175/
Citation Formats
Colgate, Stirling A. Method of deep drilling. United States: N. p., 1984.
Web.
Colgate, Stirling A. Method of deep drilling. United States.
Colgate, Stirling A. Sun .
"Method of deep drilling". United States. https://www.osti.gov/servlets/purl/865257.
@article{osti_865257,
title = {Method of deep drilling},
author = {Colgate, Stirling A},
abstractNote = {Deep drilling is facilitated by the following steps practiced separately or in any combination: (1) Periodically and sequentially fracturing zones adjacent the bottom of the bore hole with a thixotropic fastsetting fluid that is accepted into the fracture to overstress the zone, such fracturing and injection being periodic as a function of the progression of the drill. (2) Casing the bore hole with ductile, pre-annealed casing sections, each of which is run down through the previously set casing and swaged in situ to a diameter large enough to allow the next section to run down through it. (3) Drilling the bore hole using a drill string of a low density alloy and a high density drilling mud so that the drill string is partially floated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}