Petroleum Engineering 406

1
Petroleum Engineering 406

• Introduction

2
Introduction

• Introduction to course
• Class hours
• Grading
• Textbooks
• Schedule
• Introduction to Well Control

3
Introduction

• Description (3-0). Credit 3. II
• Well control underbalanced drilling offshore
  drilling horizontal, extended, reach,
  multi-lateral drilling and fishing operations
• Prerequisite PETE 411
• Classes 800 850 a.m. MWF
• Richardson 313

4
Introduction

• Instructor Jerome J. Schubert, PE
• Office 501K Richardson
• Hours 900 - 1100 a.m. TR
• Phone [phone]
• e-mail schubert_at_spindletop.tamu.edu
• Notes http//pumpjack.tamu.edu/schubert

5
Grading

• QuizA 20
• Quiz B 20
• Final 20
• Hmwk 20
• Project 20

6
Textbooks

• Applied Drilling Engineering
• Bourgoyne, Chenevert, Millheim, Young
• Well Control Manual
• Schubert
• Handouts, Technical papers, etc.

7
Course Content

• Well Control
• Kicks
• Blowouts
• Terminology
• Basic Well Control Calculations
• Causes of Kicks
• Kick Detection
• Shut-In Procedures

8
Course Content

• Well Kill Procedures
• Equivalent Mud Weights
• Casing Seat Tests
• Kick Tolerances
• Gas Kicks
• Abnormal Pressure
• Casing Seat Selection

9
Course Content

• Well Control Equipment
• Unusual Well Control Operations
• Shallow Gas
• Subsea Well Control

10
Course Content

• Underbalanced Drilling, UBD
• Introduciton to UBD
• UBD techniques
• Benefits
• Equipment
• Selecting candidates
• UBD engineering

11
Course Content

• Offshore Drilling
• Platform Rigs
• Jackup rigs
• Floating Drilling

12
Course Content

• Dual Gradient Drilling
• Introduction to DGD
• U-tube concepts
• Pressure profiles
• DGD well control

13
Petroleum Engineering 406

• Lesson 1
• Well Control

14
Well Control

• Kick
• an unscheduled entry of formation fluids into
  the wellbore, of sufficient Quantity to require
  shutting in the well.
• Blowout
• Loss of control of a kick

15
Blowout
16
Blowouts
17
Well Control

• Blowout
• Surface
• Underground
• Blowouts caused by
• equipment failure
• human error

18
Well Control

• Engineers in office can aid in well control by
• Provide pressure profiles for all pending wells
• Provide offset information such as logs, bit
  records, mud reports, drilling records.
• Provide support and assistance personnel on
  location.

19
Well Control Terminology

• Hydrostatic pressure .052 x MW x TVD

20
Hydrostatic Pressure

• Derive HSP equation
• Calculate the HSP for each of the following
• 10,000 of 12.0 ppg mud
• 12,000 of 10.5 ppg mud
• 5,000 of 11.2 ppg mud on top of 6,000 of 16.5
  ppg mud

21
Hydrostatic Pressure
A

• Derive HSP equation
• Area A, sq.ft.
• Height h, ft.
• Density MW, ppg
• Weight of fluid
• Ah (ft3)62.4 lb/ ft3 MW/8.33
• 62.4/8.33MWAh

h
MW
22
Hydrostatic Pressure

• This weight is equally distributed over an area
  of A sq.ft or 144A sq. in.
• Pressure Weight (force)/area
• 62.4MWAh
• 8.33144A
• P.052MWh where hTVD

23
Terminology

• Pressure Gradient
• psi/ft .052 x MW
• ppg equivalent
• Formation Pressure
• Normal pressure
• Abnormal pressure
• Subnormal pressure

24
Terminology

• Overburden pressure
• function of rock and fluid above zone of interest
• Fracture pressure

25
Terminology

• Pump pressure or system pressure loss

26
Terminology

• Slow Pump Pressure
• Taken
• every tour by each driller
• pumps repaired or liners changed
• mud properties change
• every 500 of hole
• change in BHA
• bit nozzles changed

27
Terminology

• Surge pressure
• Swab pressure

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Terminology

• Shut-in drillpipe pressure - SIDPP
• FP HSPdp SIDPP
• Shut-in casing pressure - SICP
• FP HSPcsg mud HSPinflux SICP
• Bottom-hole pressure - BHP
• BHP HSP SIP Friction Surge - Swab

29
U-Tube Concept
30
Basic Calculations

• Dia, in - cap, bbl/ft

31
Basic Calculations

• Pump Output
• Duplex Pump
• Triplex Pump

32
Basic Calculations
33
Basic Calculations

• Kill Weight Mud
• KWM SIDPP/(0.052 x TVD) OWM
• KWM FP/(0.052 x TVD)

34
Weight material to add to increase density