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Question 1

Describe Thixotropic Cement

Answer 1

Provides rapid gel strength, control lost circulation, and prevents cement fallback

Question 2

What is the Halliburton Hierarchy When Pumping Fluid Downhole

Answer 2

Each fluid is 1 ppg heavier than previous

• spacer 1 ppg heavier than mud
• cement at least 1 ppg heavier than spacer

Question 3

What is the HT-400

Answer 3

The HT-400 or Horizontal Triplex 400 is Halliburton’s Primary Cement Pump

Question 4

Definition of a Standoff and Formula

Answer 4

When casing is not centered in hole.

Formula= (Actual Clearance)*(100% concentric clearance). No more than 70% standoff

Question 5

What is Halliburton’s Pre-Job Circulation Recommendations

Answer 5

95% of caliper hole volume is circulating, rotate the casing string 5 to 15 rpm

Question 6

What is the Equivalent Circulating Density (ECD) Formula

Answer 6

ECD= (Hydrostatic Pressure) + (Friction Pressure)

Question 7

What is the Turbulent Flow Definition

Answer 7

Maximum mud removal is reached due to high frictional/drag forces, causing 95% of mud removal

Question 8

What is the definition of flocculation

Answer 8

Process of contact and adhesion whereby the particles of dispersion form larger clusters

Question 9

What is Super Flush

Answer 9

Improves cement bonding and zonal isolation, down hole fluid loss control, prevents cement fall back, aids in lost circulation control during cementing not recommended for liners

Question 10

“C” Factor Used for Calculating

Answer 10

Pipe Stretch

Question 11

What is the Wellbore Configuration

Answer 11

Vertical/measured depth, casing size and weight, deviation, hole size and conditions, casing hardware, down hole tools

Question 12

Wellbore Environment

Answer 12

Formation information, pay zone location, sensitivity to water, fresh water and salt zones, water flows, fracture gradients, formation pressure, circulating temperature, static temperature, cement columns are different temperatures, drillings fluid data, mud type, density, PV and YP, fluid loss, gel strength development.

Question 13

2 Factors That Most Effect Well Conditions Slurry Design

Answer 13

Temperature and Pressure

Question 14

2 Factors That Most Effect the Mixing of Slurry

Answer 14

Density and Mxing Energy

Question 15

Slurry Design Factors

Answer 15

Wellbore conitions dictate slurry, density, placement time, filtration control, slurry stability, WOC time, gas migration control, mechanical prop.

Question 16

Why Control Fluid Loss

Answer 16

To prevent dehydration of the slurry, prevent sloughing and swelling of fresh water formations, prevent bridging and permeability damage to sensitive production zones, it is a key design factor for squeezes.

Question 17

What are factors for poor cement jobs

Answer 17

1. Poor mud removal, which happens because of poor mud quality= poor mud removal= poor cement job= poor job stimulation= poor producing well

Question 18

What is the purpose of mud while drilling

Answer 18

Cleans the bottom hole, transports bit cuttings to surface, cools/lubricates the bit, provides well control

Question 19

Name Strength Stabilizing Additives

Answer 19

SSA-1 Silica Flour and SSA-2 Silica Sand

Question 20

Reasons for Multiple Stage Cement Equipment

Answer 20

Cement hydrostatic pressure is too great for formation casing, separate different types of cement blends, limited pump time, if you are only cementing certain sections of the annulus

Question 21

Halliburton Ball Drop/Free Fall Equipment

Answer 21

Not recommended for use in wells with over 30 degrees in deviation

Question 22

Reasons for Packer Collar

Answer 22

Support hydrostatic pressure and isolate intervals

Question 23

Definition of Collapse Pressure

Answer 23

Pressure Exerted outside of the pipe

Question 24

What are the 4 strings of casing and purpose

Answer 24

1. Conductor casing- prevents washout from under the rig, confines circulalting fluids, provides elevation for flow line, gives support for wellhead, set from 20-1500 feet
2. Surface Casing- Protects fresh water sands, supports future casing strings, cases of potential lost circulation zones,
3. Intermediate- Isolates salt sections, controls the hole and separates the well into workable drilling segments
4. Production Casing- Provides control of the well at the wellhead (money string), provides pressure control.

Question 25

What is the purpose of cementing primary casing

Answer 25

It is the initial cementing operation performed right after casing has run into the hole, provides zonal isolation, well control, protects casing against corrosion/burst/collapse/drilling shocks

Question 26

What the four types of liners

Answer 26

Drilling/Intermediate liners, production liners, stub liners, tieback liners