Important questions of New IWCF course these days.

Please share other questions you encounter in IWCF to help future participants.

Q1.What is inflow test?

Correct Answer according to me is:( A test in which the hydrostatic pressure is reduced such that the net differential pressure direction is from the formation into the wellbores)

Answer you have to chose as option :It is used to test that cement between previous casing is set well and there is no channelling in it.

Q2.  There are lot of horizontal mud gas separator questions coming these days.

One is what is function of hot pitot tube:

Ans according to me ( It is used to refill mud seal with fresh mud)

What is back pressure in Horiontal mud gas seperator

Ans according to me ( It is due to height of vent Line)

Q3 There are questions coming related to well barrier test:

One is for how much time well barrier test documents should be kept:

Options: it should be signed by authoried person and destroyed immediately

It can be signed by unauthorized person but kept for future use.

Two other options were also there and you have to select two options out of four.

Q4 All Ram preventors are designed to open when well bore pressure is acting from below and riser head is acting from above.

True or False

Ans) True

Q5) How well barrier test is conducted?

Please comment on these questions and add your experience of IWCF

Q6) 2-3 comments are coming on swabbing So study in detail.

Comments from fellow members of this website

The new type questions are related with Risk Management and some about the barriers.
The biggest difficulty is with the length of English explanation of the scenario.
Number of questions have also increased from 47 to 52 in the same 1-1/2 hr for L3.

Few questions on Envelope and barrier are also there.
Primary Barrier: drilling fluid
Secondary Barrier: BOP
tertiary barrier: kill mud

Question on documentation of secondary barrier test and leak off test

How many barrier should be atleast there on Derrick floor?
I/BOP and FOSV

Barrier is found leaking what should be done?
It should be abandoned or it should be repaired?

6 thoughts on “Important questions of New IWCF course these days.

  1. Sreeram Prasad says:

    Very good to practice

  2. Well barrier are tested by perfoming an inflow test which is reducing the hydrostatic head and letting the formation pressure act on the barrier observing same for certain time period.

  3. jester says:

    what is in flow test?

    1. admin says:

      Inflow Testing Procedure

      Inflow tests are generally carried out to verify if there is communication with the formation through the casing, a liner lap or past a cement plug (bridge plug).

      Most of the applications are in connection with testing or squeezed off perforations and casing leaks, testing liner-laps, float shoes and float collars, cement plugs and bridge plugs.

      An inflow test is performed by reducing the hydrostatic head above the item to be tested by circulating to a lighter fluid.
      Procedure for Circulating to Lighter Fluids (Diesel etc.)

      RUN retrievable packer with circulating valve, safety joint and short tail on drillpipe, to depth to be advised by Operations Engineer.
      SET retrievable packer at advised depth and test annulus with 1000 psi in order to check that packer is properly sealing and that the tool assembly is functioning properly before RIH any further.
      Generally, the retrievable packer should be set at some 50 ft above the interval to be tested (or 50 ft above TOL) in order to minimise any possible influx. OBTAIN prior approval from the Head of Onshore/Offshore Operations for inflow testing during the hours of darkness.
      CIRCULATE the drillpipe to a lighter fluid until the required drawdown is accomplished. (An air cushion may be used)
      After having circulated the well to achieve the required drawdown, PERFORM the inflow test on the well for 15minutes as detailed in the Drilling Programme.
      REVERSE well to completion fluid.
      UNSEAT retrievable packer. CIRCULATE and OBSERVE well dead.
      POOH and L/D retrievable packer.

      Interpreting Inflow Test Results

      The “Horner Plot” method should be used for interpreting inflow tests to confirm the integrity of liner laps for over pressured gas wells. Traditional methods are often ambiguous and require unnecessary long rig time.
      Traditional Interpretation method

      The mechanical integrity of e.g. liner laps can be tested by creating a underbalanced situation over the zone of interest. This is usually done by displacing the well to water. Once the well has been displaced to water, the fluid returns are monitored for a duration of say 4 hrs. This back flow from the well is caused either by thermal expansion, or an influx into the well bore (leak) and thermal expansion

      The observed flow rates are plotted against a time scale allow to determine if the situation is one with both an influx and thermal expansion or with temperature effects only. In order to positively determine whether and when zero flow will materialise, the inflow test has to be conducted for much longer than 4 hours.

  4. I need full exam test for P&P and one full exam for equipment

  5. Happi Sylvester says:

    Question. Please help me with an answer.

    With the knowledge of the disadvantages and advantages of rigs and platforms, briefly explain how you would drill and produce from a reservoir located 5 km offshore and in 500 m depth of water. Crude oil produced at 5000 bbl/day must be at least 5 working days till offloading. You are limited to one type of platform or rig to ensure cost effectiveness. (Give reason for your choice of platform or rig)

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