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Petroleum Engineering 406

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II Well control; underbalanced drilling; offshore drilling; horizontal, extended, reach, multi-lateral drilling; and fishing operations Prerequisite: ... – PowerPoint PPT presentation

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Title: 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 979/862-1195
  • 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

28
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
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