American Oil and Gas Reporter - August 2015 - 51

SpecialReport: Horizontal Well Operations

Eagle Ford Application

The design of the four Eagle Ford
wells analyzed in this study included:
* Drilling a 121⁄4-inch vertical hole to
approximately 3,500 feet;
* Setting 95⁄8-inch casing;
* Drilling an 83⁄4-inch vertical hole
with a nudge section to 10,000 feet;
* Drilling a short build section at 810 degrees per 100 feet; and
* Drilling a 7,000-foot lateral section
at 93.5 degrees of inclination.
Figure 1 shows a 3-D view of the four
wells, while Figure 2 shows the typical
vertical section of well 3.
All four wells used the same BHA for
the curve and lateral sections from 10,000

FIGURE 3
Simulated and Actual Torque Off-Bottom in Curve
And Lateral Sections for Wells 1 (SDP) and 2 (ADP)
13,000.00
12,500.00
12,000.00
11,500.00
11,000.00
10,500.00
10,000.00
9,500.00
9,000.00
8,500.00
8,000.00
7,500.00
7,000.00
6,500.00
6,000.00
5,500.00
5,000.00
4,500.00
4,000.00
3,500.00
3,000.00
2,500.00

Torque lb/ft)

In general, aluminum should not be used
in environments in which the pipe body
will reach temperatures of 240 degrees
Fahrenheit for extended periods or where
pH is outside a range of 4 to 10 without
considering temperature- or corrosionrelated strength downgrades.

10,000.00 10,500.00 11,000.00 11,500.00 12,000.00 12,500.00 13,000.00 13,500.00 14,000.00 14,500.00 15,000.00 15,500.00 16,000.00 16,500.00 17,000.00 17,500.00
String Depth (ft)
AADP

SDP

Friction factor = Cased hole/open hole

feet to 17,000 feet: an 83⁄4-inch PDC bit,
a 63⁄4-inch steerable mud motor with a
2.0-degree bend and a 4/5 lobe stator
configuration, and a 63⁄4-inch measurement-while-drilling tool. The drill string

in well 1 used only 5-inch S135 steel
pipe. In the other three wells, 180 joints
of SDP were replaced with 57⁄8-inch 2014T6 ADP starting directly above the BHA.
The torque and drag optimization study

AUGUST 2015 51


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American Oil and Gas Reporter - August 2015

Table of Contents for the Digital Edition of American Oil and Gas Reporter - August 2015

Contents
American Oil and Gas Reporter - August 2015 - Cover1
American Oil and Gas Reporter - August 2015 - Cover2
American Oil and Gas Reporter - August 2015 - 3
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American Oil and Gas Reporter - August 2015 - Contents
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