Suspension

Question 1

What do we do if we want to reactivate a suspended well?

I

I

R

R

Answer 1

1. Inspect, service and pressure test the wellhead
2. Inspect and service control systems and lease facilities
3. Retain all records
4. Report reactivation of the well to the AER DDS system

Question 2

What is an inactive critical sour gas well?

Answer 2

A well that has not reported any type of volumetric activity for 6 consecutive months.

Question 3

1. How do we define inactive wells?

Answer 3

Where production, injection, disposal or workover operations have ceased.

Question 4

How do we define inactive wells?

Answer 4

Where

• production,
• injection,
• disposal or
• workover

operations have ceased.

Question 5

Where do suspensions get reported?

AER-DDS System

How many days does the licensee have to report the suspension?

Twelve Months of non-production then ? days to get it registered with the AER via DDS

Answer 5

60

Question 6

What are the three well risk categories for inactive wells?

• Low risk

-

-

Answer 6

Medium risk

High risk

Question 7

No matter the risk level of the inactive well, what must the licensee ensure when it comes to surface requirements?

1. Take reasonable steps to c and c spill or release in accordance with OGCR Sections 8.050(1)
2. Have appropriate s
3. Have 24 hours…

Answer 7

1. contain and clean up
2. signage
3. emergency phone number posted

Question 8

What are the wellhead requirements for a suspended well?

1. • No ?
2. • Regular
3. -All outlets except surface casing vents be
4. -? be functional
5. -Grease and service to m f

Answer 8

1. leaks
2. service (pressure tested)
3. bull plugged or blind flagged
4. Valves
5. maintain function

Question 9

8) After being suspended for 10 plus consecutive years, a low-risk well will now become a ­­­­ ­­­­­­­­ well and have to follow appropriate criteria.

9) Where can a list of inactive wells be found?

What directive requires this?

Answer 9

Medium-risk

AER website—DDS

D-013

Question 10

How does the AER classify the risk of gas wells containing H₂S?

Answer 10

• Low-risk well
• Medium risk
• High-risk well

Question 11

What must occur for a well to be removed from the suspended/inactive well lists?

• All wells:
  
  • Inspect, service, and pressure test wellhead
  • Inspect and service control systems and lease facility
• Medium and High risk:

Answer 11

• Pressure test casing to 7 MPA for 10 minutes
• If tubing is present, pressure test the tubing to 7 MPA for 10 minutes

Question 12

Does a suspended well have to be disconnected from associated pipelines?

Answer 12

Yes

Wellhead has to be physically disconnected from the pipeline once the well is shut-in and requires suspension

Question 13

What are the requirements/steps when disconnecting a pipeline?

Pipeline rules s. 82(3)(a-f)

1. Physically isolate and
2. Clean it
3. Purge with
4. Protect with suitable internal and external
5. Do not isolate or disconnect so an adjoining pipeline has…
6. Left in a safe condition- the fluids are…

Answer 13

• a. disconnect from an operating facility or another pipeline
• c. with fresh water, air, inert gas and if possible add an internal corrosion inhibitor
• d. corrosion control measures
• e. fittings or connection points remaining that could create stagnant fluid traps or dead legs unless locations are accessible and subject to scheduled inspections
• confirmed and documented non-corrosive

Question 14

Perforating, Well Completions

A downhole tool that is located and set to isolate the

Bridge plugs may be permanent or retrievable, enabling the lower

Answer 14

lower part of the wellbore.

wellbore to be permanently sealed or temporarily isolated

from production or temporarily isolated from a treatment conducted on an upper zone

Question 15

When it comes to pipelines, D-013 is useless so where do you find suspension requirements for pipelines?

Queens Printer -Section ?, Part ? -Discontinuation

Answer 15

82**

10

Question 16

Bridge plugs may be

1. ? or
2. ? to be permanently sealed from production or
3. temporally ? from a treatment conducted to an upper zone

Answer 16

1. permanent
2. retrievable
3. isolated