8/18/2019 34. Horizontal Drilling
1/36
PETE 411 - Well Drilling34. Horizontal Drilling
PETE 411Well Drilling
Lesson 34
Horizontal Drilling
8/18/2019 34. Horizontal Drilling
2/36
PETE 411 - Well Drilling34. Horizontal Drilling
Horizontal Drilling
Why Drill Horizontal Wells?
Relative Production Rates
Relative Costs Types of Horizontal Wells
Drilling Problems & olutions
Ho! Popular is Horizontal Drilling?
"#amples
8/18/2019 34. Horizontal Drilling
3/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
4/36
PETE 411 - Well Drilling34. Horizontal Drilling
Why Drill Horizontal Wells?
$ncrease Reserves
$ncrease Production Rates
Control Water Production
Control %as Production
8/18/2019 34. Horizontal Drilling
5/36
PETE 411 - Well Drilling34. Horizontal Drilling
Why Drill Horizontal Wells?
Produce rom Thin Reservoirs
Connect 'ertical ractures
Produce (ethane from Coal eams
$ncrease $n)ectivity* +steam, !ater, polymers, etc-.
Control and Production
8/18/2019 34. Horizontal Drilling
6/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
7/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
8/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
9/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
10/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
11/36
PETE 411 - Well Drilling34. Horizontal Drilling
Production Ratesry! - "ustin #hal$
'ertical Horizontal Horizontal/'ertical Well Well Production Ratio 0/D 0/D
12 345 62
13 213 16
3 145 21
8/18/2019 34. Horizontal Drilling
12/36
PETE 411 - Well Drilling34. Horizontal Drilling
Production Rates
Drilled 5 !ells from 1789 to 1787-
Drilled : 83 !ells in 1774
'ertical Well Drilling Cost; 2
8/18/2019 34. Horizontal Drilling
13/36
PETE 411 - Well Drilling34. Horizontal Drilling
Drilling #osts"ustin #hal$ %1&&3'
'ertical !ell : =344,444
Recompletion as Horizontal Well : =e! Horizontal Well :=1,444,444*2,444,444
: =144/ft to=134/ft
@these numbers are rough estimates onlyA
8/18/2019 34. Horizontal Drilling
14/36
PETE 411 - Well Drilling34. Horizontal Drilling
Ros(o )are - *taly
8/18/2019 34. Horizontal Drilling
15/36
PETE 411 - Well Drilling34. Horizontal Drilling
Prudhoe +ay
'ertical Well;
8/18/2019 34. Horizontal Drilling
16/36
PETE 411 - Well Drilling34. Horizontal Drilling
Long Radius %,1-3 /t' 0,-2 deg1 /t
)ediu5 Radius %14,6 /t' 0,7-4 deg1 /t
8hort Radius %,-4 /t'
0,1.9-3 deg/t
:1 /t ,9 /t ,7 /t
8/18/2019 34. Horizontal Drilling
17/36
PETE 411 - Well Drilling34. Horizontal Drilling
;e< Drilling Technology
(easurement While Drilling +(WD.
Directional urverying and Control
$ndentification of (arBers +identify zones.
Top Drive
Drill !ith 74*ft stands instead of
8/18/2019 34. Horizontal Drilling
18/36
PETE 411 - Well Drilling34. Horizontal Drilling
;e< Drilling Technology
(ud (otors
Drill !ithout rotating pipe
Change hole direction !hiledrilling
teerable systems
8/18/2019 34. Horizontal Drilling
19/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
20/36
PETE 411 - Well Drilling34. Horizontal Drilling
Potential Pro=le5s in Horizontal
Drilling
Running euipment in and out of hole
drillstring, casing, cables
Preventing/Remedying differentialsticBing
"#cessive torue
8/18/2019 34. Horizontal Drilling
21/36
PETE 411 - Well Drilling34. Horizontal Drilling
Potential Pro=le5s in Horizontal
Drilling
Cleaning the hole and preventing cuttingsfrom settling along the hole bottom
Controlling !eight on bit to achieve andmaintain directional control
Cementing casing or liner
8/18/2019 34. Horizontal Drilling
22/36
PETE 411 - Well Drilling34. Horizontal Drilling
8u55ary
Horizontal !ells may produce at
8/18/2019 34. Horizontal Drilling
23/36
PETE 411 - Well Drilling34. Horizontal Drilling
8u55ary
The use of horizontal !ells has beengro!ing * !orld!ide-
Horizontal !ells has increased our
recoverable reserves-
$n the F-- one rig in ten is drillinghorizontal !ells- +1776. +1778.
Today : one rig in fifteen is drillinghorizontal !ells- +2441.
8/18/2019 34. Horizontal Drilling
24/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
25/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
26/36
PETE 411 - Well Drilling34. Horizontal Drilling
Long - Radius Wells
Fsed for achieving large horizontal
displacements from platforms or drilling pads
Fsed for achieving very long horizontal sections
+to 9,444 ft .
0uild Rate; : 2*9 degrees/144 ft
0uild Radius; : 1,444*
8/18/2019 34. Horizontal Drilling
27/36
PETE 411 - Well Drilling34. Horizontal Drilling
)ethod>
Fse conventional directional drillingtechnology
Fse rigid bottom hole assemblies,motors & bent subs, stabilizers
or Fse >avigation drilling systems !ithsteerableI drilling motors
8/18/2019 34. Horizontal Drilling
28/36
PETE 411 - Well Drilling34. Horizontal Drilling
)ediu5 - Radius Wells
0uild Rate; : 8 * 24 degrees/144 ft
+up to 64 deg/144 ft in some
cases.
0uild Radius; :
8/18/2019 34. Horizontal Drilling
29/36
PETE 411 - Well Drilling34. Horizontal Drilling
)ethod>
Fse modified long*radius drilling technology Fse different motors for "ngle +uild and
"ngle Hold sections-
Fse a Tangent 8ection@ bet!een the t!obuild sections
Fse compressive service drillpipe through
the curve if 0uild Rate J 13 deg-/144 ft-
+C drillpipe has integral !ear Bnotsevery : 14 ft.
8/18/2019 34. Horizontal Drilling
30/36
PETE 411 - Well Drilling34. Horizontal Drilling
8hort-Radius Wells
0uild Rate; : 1 * < degrees/ft
0uild Radius; : 24 * 64 ft
Gength of Horiz- ection; 244 * 1,444 ft
8/18/2019 34. Horizontal Drilling
31/36
PETE 411 - Well Drilling34. Horizontal Drilling
)ethod>
T!o do!nhole motor designs are available Drill vertical ratholeI to identify horizon
0uild angle !ith special curve*drilling
assembly !ith a non*rotating shell thatgives curvature to the tool
Kfter building angle to horizontal, use a
special angle*hold assembly; thisconsists of t!o undergauge stabilizersbehind the bit, and fle#ible drillpipe-
8/18/2019 34. Horizontal Drilling
32/36
PETE 411 - Well Drilling34. Horizontal Drilling
8/18/2019 34. Horizontal Drilling
33/36
PETE 411 - Well Drilling34. Horizontal Drilling
Horizontal Well Pair
8/18/2019 34. Horizontal Drilling
34/36
PETE 411 - Well Drilling34. Horizontal Drilling
Horizontal Well Pair
8/18/2019 34. Horizontal Drilling
35/36
PETE 411 - Well Drilling34. Horizontal Drilling
Aertical *nBection Wells and
Horizontal Production Well
8/18/2019 34. Horizontal Drilling
36/36