close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2114476

код для вставки
April 19, 1938.
D. RAGLAND
2,114,476
METHOD AND APPARATUS FOR DEFLECTING A BORE HOLE
Filed June 22, 1936
2 Sheets-Sheet 1
April 19, 1938.
'
D. RAGLAND
2,114,476 '
METHOD ‘AND APPARATUS FOR DEFLECTING A BORE HOLE
Filed June 22, 1936
2 Sheets-Sheet 2
v
/
. m.
.0.
a
Patented Apr. 19, 1938'
v 2,114,476
UNITED STATES PATENT OFFICE
2,114,476
DIETHOD
APPARATUS FOR DEFLECT
ING A BORE HOLE
Douglas Ragland, Houston, Tex., assignor to
Standard Oil Development Company, a corpo
ration of Inlaware
Application June 22, 1938, Serial No. 86,506
10 Claims.‘ (Cl. 255-1)
This invention relates to improvements in ei
bore hole until the bit I‘! is near the bottom 9
fecting the de?ection of a bore hole, such as a of the bore hole, or‘the top of the plug. In this
drilling well.
\
position the bore end l3 of the drill stem III is
The invention will be fully understood from the
5 following description, taken in connection with
the accompanying drawings, in which latter—
Fig. 1 is a vertical, sectional view through the
earth, showing a bore hole with the apparatus for
de?ecting the bore hole disposed therein.
10
Fig- 2 is a detailed view of that portion of the
hole containing de?ection apparatus, and
Fig. 3 is a vertical, sectional view, showing the
de?ected hole formed‘ by de?ection apparatus.
Fig. 4 is a detail view of the end of the drill
15 stem showing a conventional bit and reamer.
on one side of the hole, while that portion ll
of the stem Ill above the curve is on the opposite
side of the hole. The drill stem is then oriented
by turning the string of drill pipe until the bit
I1 is on a predetermined side of the hole. It is
understood that the drill pipe is oriented 9.511;
is lowered into the hole so that the position of 10'
the planeor planes containing the stem I0 is
always ‘known. The drill pipe 4 is now lowered
by means of drawworks 2| until the bit I‘! is in
engagement with the bottom 9 of the bore hole,
or the top of the plug, and sumcient weight of 15
Referring to the drawings, reference numeral . drill pipe, or pressure, is applied to the section It
1 designates the surface of the earth and 2 desig
nates the bore hole, the course of which is to be
de?ected.
The hole is drilled with the use of
20 ‘rotary tools, including rotary 3 and a drill stem
4 through a Kelly or drive joint 5, a travelling
block 6, a crown block ‘I, and a drawworks 2|.
to force the bit l‘l against the bottom of the hole
and cause the curved portion l l to take the posi
tion shown in dotted lines, designated 20, and
illustrated in Figs. 1 and 2. The drill stem is 20
then rotated, continuing application of pressure
The hole 2 has been substantially extended by
to cause the curved portion II to remain in the
dotted line position, and the plane or planes con
drilling to the designation 9.
taining the stem ID to remain ?xed, while deep
-
It is frequently necessary, or desirable, to de
?ect the course of the bore hole in a predeter
mined or an undetermined direction. Also, it
may be desirable to cause the drift or slope of the
ening the hole. As a result, the bit I‘! is forced
in a lateral direction as illustrated at 22, in Fig. 3.
It will be understood that the section of drill
pipe l0 which e?ects the change of direction of
bore hole, drilling well, or rotary hole to be
30 changed, increased, decreased, or remain fixed,
the bore hole may be made ‘from a piece, section
or bit of pipe, tube, or a hollow body of metal 30
whether the result is or is not predetermined, in
whole or in part. The apparatus for accomplish
ing these results comprises a section of drill stem
l 0 formed of ?exible material, a portion of which
35 is curved at H to a su?icient degree ‘such that
the bore end l3 of the section is disposed on one
side of the bore hole, while that'portion ll of
the section above the curved portion II- is on the
opposite side of the bore hole, as clearly illus
40 trated in the ?gures. The drill stem may be
made of the usual ?exible material of which drill
stems are constructed, or- it may be tempered, if
or alloy, kinked, bent or curved in one or more
desired.
‘
In the embodiment illustrated, the curved por
45 tion. H of that section of drill stem is supplied
the section. Alternatively, the bits, points, rotary
shoes, cutting edges or edge, may be left o? en
tirely and some of the advantages of the inven
tion will be retained.
,
While the invention has been described as ap
plied to directing the course of a bore hole in a
predetermined direction, ‘it will be understood
that it can be used todirect the hole in an unde
termined direction, that it can be used 'to cor
rect the direction of a hole to its initial direction '
and in causing the drift or slope of a bore hole,
drilling well, or rotary hole, to increase, decrease,
with a reamer l5 and the lower end’ of the sec
tion is provided with a bit ll.
points and provided with bits,- points, rotary
shoes, cutting edges or edge, placed at one or
both ends of the section, or along the length of
,
In utilizing the device, the hole is drilled by
usual procedure to a given depth, at which point
50 it is to be de?ected. Alternatively, a drilled hole
can be plugged back. The drill tools are then
removed from the hole and the curved section
of drill stem III is a?ixed to the bottom of the
string of drill pipe 4. The string of drill pipe
55 with the curved section It is inserted into the
or remain ?xed, whether 'the result is or is not
predetermined in whole or in part, and some of
the advantages of the invention will be retained.
While the. invention has been described as an 50
apparatus comprised of a section of‘drill stem l0
formed of ?exible material, a portion ll of which
is curved to a sufficient degree such that the‘
bore end I3 of the section is disposed on oneside
of the bore hole, while that portion ll of the 55
2
2,114,476
section above the curved portion H is on the opposite side of the hole, and cutting members
carried by the drill stem within the. length of the
opposite side of the bore hole, it will be under
stood that the apparatus may be comprised of a curved portion.
6. Apparatus for de?ecting a bore hole, which
section of drill stem formed of ?exible material,
a portion or all of which is curved, and some of - comprises a drill stem of lesser diameter than the,
the advantages of the invention will be retained. hole and of ?exible material, a portion of which is
Various-changes and alternate arrangements
curved, whereby the lower end of the drill stem is
may be made within the scope of the appended
claims, in which it is my intention to claim all
10 novelty inherent in the art as broadly as the prior
on one side of the bore hole when the portion of
the-stem above the curved portion is on the oppo
art permits.
I claim:
1. The method of de?ecting a bore hole, which
comprises disposing in the hole a drill stem of
15 lesser diameter than the hole and of ?exible ma
site side of the hole, and cutting members car 10
ried in the body of the drill stem withinthe length
of the curved portion and at the end of the curved
portion.
-
7. The method of de?ecting a bore hole, which
comprises disposing in the hole a drill stem of . 15
terial, a portion of which is curved longitudinally,
lesser diameter than the hole and of ?exible
whereby the lower end of the drill stem is on one
side of the- hole when that portion of the stem
above the curved portion is on the opposite side
20 of the hole, applying su?icient weight to the stem
to force the lower end against the bottom of the
hole and to ?ex the material of part of the curved
portion so that it bears against the side of the
hole, rotating the stem continuously, and con
material, a portion of which is curved, applying
su?icient weight to the stem to force the lower
end against the bottom of the hole and to ?ex the
material of part of the curved portion so that it 20
bears against the side of the hole, rotating the
stem continuously, and continuing the application
of weight to retain the curved portion in its ?exed
given side of the hole, applying su?icient weight
position and to retain the stem in a fixed plane
or planes while drilling the hole, whereby the 25
course is de?ected.
8. The method of de?ecting a bore hole, which
comprises disposing in the hole a drill stem of
lesser diameter than the hole and of ?exible ma
terial, a portion of which? is- curved, applying 30
sufficient weight to the stemto force the lower
end against the bottom of the hole and to ?ex
the material of part of the curved portion so that
it bears against the side of the hole, rotating the
stern continuously, and continuing the applica 35
tion of weight to retain the curved portion in its
?exed position and to retain the stem in a ?xed
to the stem to force the lower end against the
bottom of the hole and to ?ex the material of
part of the curved portion so that it bears against
the side of the hole, rotating the stem continu
plane or planes, while drilling the hole, whereby
tion.
40
9. The method of de?ecting a bore hole, which
ously, and continuing the application of weight
to retain the curved portion in its ?exed position
and to retain the stem in a ?xed plane or planes,
45 while drilling the hole, whereby the course is to
be de?ected in a predetermined direction.
3. Apparatus for de?ecting a bore hole which
comprises a drill stem of lesser diameter than the
hole and of ?exible material, a portion of which
50 is curved, whereby the lower end of the drill stem
comprises disposing in the hole a curved drill
stem of ?exible material and of lesser diameter
tinuing the application of weight to retain the
curved portion in its ?exed position and to retain
the stem in a ?xed plane or planes, while drilling
the hole, whereby the course is de?ected.
2. The method of de?ecting a borehole by dis
3.0. posing in the hole a drill stem of lesser diameter
than'the hole and of ?exible material, a portion
of which is curved,_whereby the lower end of the
drill stem is on one side of the hole when that
portion of the stem above the curved portion is
35 on the opposite side of the hole, orienting the
stem in the hole whereby the lower end is on a
the course is de?ected in a predetermined direc
than the hole, applying su?icient weight to the
stem to force the lower end against the bottom of 45
the hole and to ?ex the material of part of the
curved portion so that it bears against the side of
the hole, rotating the stem continuously, and
continuing the application of weight to retain the
curved portion in its ?exed position and to retain
is on one side of the bore hole when the portion
of the stem above the curved portion is on the
opposite side of the hole.
the stem in a ?xed plane or planes while drilling
the hole, whereby the course is de?ected.
10. The method of de?ecting a bore hole, which
- 4. Apparatus for de?ecting a bore hole, which
55 comprises a drill stem of lesser diameter than
stem of ?exible material and of lesser diameter
the hole and of ?exible material a portion of
which is curved, whereby the lower end of the
drill stem is on one side of the bore hole when the
portion of the stem above the curved portion is
on the opposite side of the hole, and cutting mem
bers carried by the curved portion.
5. Apparatus for de?ecting a bore hole, ,which
comprises a drill stem of lesser diameter than the
hole and of ?exible material, a portion of which
is curved, whereby the lower end of the drill stem
is on one side of the bore hole when the portion
of the stem above the curved portion is on the
comprises disposing in the hole a curved drill
than the hole, applying sui?cient weight to the
stem to force the lower end against the bottom
of the hole and to ?ex the material of part of
the curved portion so that it bears against the
side of the hole, rotating the stem continuously,
and continuing the application of weight to re-v
tain the curved portion in its ?exed position and
to retain the stem in a fixed plane or planes, while
drilling the hole, whereby the course is to be de
?ected in a predetermined direction.
DOUGLAS RAG-LAND.
Документ
Категория
Без категории
Просмотров
0
Размер файла
382 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа