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Equipment in Mud Circulating Systems 9

Stabilizer

Stabilizer

Near-Bit Stabilizer
Drill Bit
Figure 1.9 A bottomhole assembly used in the petroleum industry.

Dump Sub

Rotator

Adjustable Stator
Bent Housing

Universal Coupling
Bearing
Assembly

Stabilizer

Drill Shaft

Figure 1.10 The major components of a mud motor. (Courtesy of Lilin Petroleum
Machinery Co., Ltd.)