The Perfect Tool For High Angle Horizontal Operations

DESCRIPTION

The 'Multi Cycle' Circulating Sub has been designed to offer large circulating thru Bores, along with large circulating ports.

The tool operates by utilizing an 'Indexing' mechanism. This provides a positive, 'Open or Closed' position, each and every time the tool is functioned.

The 'Drop Ball' cannot be 'ACCIDENTALLY' pumped thru the tool during the 'Cycle Open' function.

OPERATING PROCEDURE

OPENING SEQUENCE

1. Record circulating pressure at normal gpm rate
2. Record circulating pressure at reduced rate i.e. 30 SPM
3. Release activating ball into drill string and pump to within 1000 ft. of circ. sub, reduce pump rate to 30 SPM
4. Continue pumping at reduced rate until a pressure increase of approx. 600—800 PSI is observed. continue pumping until a rapid drop in circulating pressure is observed, indicating flow ports are now in the locked open position. pumps can now be stopped if required.
5. Normal or reverse circulation can now take place with the activating ball isolating the drill string below the multi-cycle sub.

CLOSING SEQUENCE

1. Record circulating pressure at normal GPM rate thru by-pass ports
2. Record circulating pressure at reduced rate i.e. 30 SPM
3. Release activating ball into drill string and pump to within 1000 ft. of circ. sub, reduce pump rate to 30 SPM
4. Continue pumping at reduced rate until a pressure increase of approx. 600—800 PSI is observed. continue pumping until normal circulating pressure thru drill string at reduced rate is observed, indicating flow ports are now in the locked closed position and both balls have sheared thru to the basket catcher sub. pumps can now be stopped if required or, normal circulation thru the total drill string continued.

ADVANTAGES

1. The multi-cycle circulating sub is the perfect tool for use in ‘high angle’ and ‘horizontal’ wells as the tool functions as the ball passes thru the tool and does not rely on the ball reaching the catcher seat to function the tool open.
2. All tools have ‘two’ large circulating ports as standard which greatly reduces the risk of plugging.
3. The multi-cycle sub is the only tool of it’s type that permits ‘full tfa reverse circulation’.
4. due to the unique design of the multi-cycle tool, the flow ports are open before the activating ball reaches the catcher seat, thus preventing the ball inadvertantly being sheared thru to the catcher basket.
5. the multi-cycle tool can be run into the well bore in the ‘locked open’ position.
6. All tools permit a minimum of ‘six’ open and close functions as standard. this number can be ‘doubled’ on request.
7. Tool can be manufactured from ‘non magnetic’ material on request.

BALL RETRIEVAL

TO RECOVER ACTIVATING BALLS :-

1. Break tool joint between circ. sub and catcher sub.
2. Pull catcher basket from ball catcher sub.
3. remove ball seat snap ring from hanger.
4. Knock out ball seat and recover balls.
5. Clean out ball seat recess .
6. Re-install ball seat and snap ring.
7. Re-install catcher basket in catcher sub.
8. Remake tool joint to correct torque.

DO NOT RE-USE BALLS

DOWNLOAD SERVICING PROCEDURES

Multi-Cycle Circulating Sub

Multi-Cycle Ball Catcher Sub