# US 2014/0151063 A1 · Chemical deepwater stimulation systems and methods

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- Number: US 2014/0151063 A1
- Document ID: US20140151063A1
- Status: Published application
- Kind: A1
- Application number: 13/694,480
- Filed: 2012-12-05
- Published: 2014-06-05
- Earliest claimed: 2012-12-05
- Inventors: David WRIGHT
- Web page: https://patentgrep.com/patent/US20140151063A1

## CPC

- E21B 33/038: Connectors used on well heads, e.g. for connecting blow-out preventer and riser
- E21B 33/0355: {Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads}
- E21B 33/064: specially adapted for underwater well heads
- H10D 30/6758: {characterised by the insulating substrates}
- H10D 86/0214: {using temporary substrates}
- H10D 86/40: characterised by multiple TFTs
- H10D 86/60: wherein the TFTs are in active matrices
- E21B 34/025: {Chokes or valves in wellheads and sub-sea wellheads for variably regulating fluid flow}
- E21B 34/04: in underwater well heads
- Y10T 29/49126: Assembling bases
- Y10T 29/49128: Assembling formed circuit to base
- Y10T 29/4913: Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T 29/49155: Manufacturing circuit on or in base
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Systems and methods for performing operations on a well include first and second flow control devices positioned between upper and lower sections of a conduit. An upper connector assembly engaged with the upper section includes connectors adapted for connection to a chemical stimulation device, a blowout preventer, or other well intervention apparatuses. A lower connector assembly engaged with the lower section includes connectors adapted for connection to a chemical stimulation device, a running tool, wellbore conduits, or other well intervention apparatuses. The two connector assemblies, above and below the flow control devices, enable sequential or simultaneous operations to be performed, and can enable operations to be performed independent of the state of the flow control devices.

## Claims

### Claim 1

A system for performing operations on a well, the system comprising:
a conduit having an upper section and a lower section;
a first flow control device positioned between the upper section and the lower section;
a second flow control device positioned beneath the first flow control device and between the upper section and the lower section;
an upper connector assembly engaged with the upper section, wherein the upper connector assembly comprises:
a first flow cross member in fluid communication with the first flow control device;
a first connector adapted for connection to a chemical stimulation device; and
a top connector adapted for engaging a blowout preventer, for performing well intervention operations therethrough, or combinations thereof; and
a lower connector assembly engaged with the lower section, wherein the lower connector assembly comprises:
a second flow cross member in fluid communication with the second flow control device;
a second connector adapted for connection to a chemical stimulation device; and
a bottom connector adapted for engaging a running tool, a wellbore conduit, a blowout preventer, or combinations thereof.

### Claim 2 (depends on 1)

The system of claim 1, wherein the first connector, the second connector, or combinations thereof, comprise an emergency quick disconnect connector.

### Claim 3 (depends on 1)

The system of claim 1, wherein the first flow control device, the second flow control device, or combinations thereof, comprise a ball valve, a hydraulic valve, or combinations thereof.

### Claim 4 (depends on 1)

The system of claim 1, further comprising a first pump in line engaged with the first flow cross member, a second pump in line engaged with the second flow cross member, or combinations thereof.

### Claim 5 (depends on 1)

The system of claim 1, wherein the first flow cross member comprises a first primary bore and a first additional bore fluidly connected with the first primary bore, wherein the second flow cross member comprises a second primary bore and a second additional bore, wherein the second additional bore is fluidly isolated from the second primary bore.

### Claim 6

A method for performing operations on a well, the method comprising the steps of:
providing a conduit in communication with a well, wherein the conduit comprises at least two flow control devices;
engaging a first operating apparatus and a chemical stimulation device with an upper section of the conduit, above said at least two flow control devices;
engaging a second operating apparatus with a lower section of the conduit below said at least two flow control devices;
performing at least a first operation through the conduit and said at least two flow control devices using the first operating apparatus, the chemical stimulation device, or combinations thereof without requiring removal of the first operating apparatus, the chemical stimulation device, or combinations thereof;
isolating the first section from the second section using said at least two flow control devices; and
performing a second operation through the conduit using the second operating apparatus.

### Claim 7 (depends on 6)

The method of claim 6, wherein the first operating apparatus comprises a blowout preventer, a well intervention apparatus, or combinations thereof.

### Claim 8 (depends on 6)

The method of claim 6, wherein the second operating apparatus comprises a blowout preventer, a chemical stimulation device, a wellbore conduit, a running tool, a well intervention apparatus, or combinations thereof.

### Claim 9 (depends on 6)

The method of claim 6, wherein the step of engaging the first apparatus, the step of engaging the second apparatus, or combinations thereof, comprises engaging an emergency quick disconnect feature of the top section, the bottom section, or combinations thereof.

### Claim 10 (depends on 10)

The method of claim 10, further comprising disengaging from the emergency quick disconnect feature in a limited quantity of time and transporting the first operating apparatus, the chemical stimulation device, the second operating apparatus, or combinations thereof, away from the conduit.

### Claim 11 (depends on 6)

The method of claim 6, wherein the step of performing the first operation, the step of performing the second operation, or combinations thereof, comprises performing the first operation, the second operation, or combinations thereof riglessly.

### Claim 12 (depends on 11)

The method of claim 11, wherein the step of performing the first operation, the step of performing the second operation, or combinations thereof, comprises the first operation, the second operation, or combinations thereof using a multi service vessel in combination with a hoisting apparatus.

### Claim 13

A system for performing operations on a well, the system comprising:
a conduit having an upper section and a lower section;
a first flow control device positioned between the upper section and the lower section;
a second flow control device positioned beneath the first control device and between the upper section and the lower section; and
an upper connector assembly engaged with the upper section, wherein the upper connector assembly comprises:
a first flow cross member in fluid communication with the first flow control device, wherein the first flow cross member enables fluid flow in at least two directions;
a first connector connected to a chemical stimulation device; and
a top connector connected to a blowout preventer, a well intervention apparatus, or combinations thereof,
wherein the upper connector assembly enables simultaneous or combined operations performed using the chemical stimulation device, the blowout preventer, the well intervention apparatus, or combinations thereof.

### Claim 14 (depends on 13)

The system of claim 13, further comprising:
a lower connector assembly engaged with the lower section, wherein the lower connector assembly comprises:
a second flow cross member in fluid communication with the second flow control device, wherein the second flow cross member enables fluid flow in at least two directions;
a second connector adapted for connection to a chemical stimulation device; and
a bottom connector adapted for engaging a running tool, a wellbore conduit, a blowout preventer, or combinations thereof.

### Claim 15 (depends on 14)

The system of claim 14, wherein the first connector, the second connector, or combinations thereof, comprise an emergency quick disconnect connector.

### Claim 16 (depends on 13)

The system of claim 13, wherein the first flow control device, the second flow control device, or combinations thereof, comprise a ball valve, a hydraulic valve, or combinations thereof.

### Claim 17 (depends on 14)

The system of claim 14, further comprising a first pump in line engaged with the first flow cross member, a second pump in line engaged with the second flow cross member, or combinations thereof.

### Claim 18 (depends on 13)

The system of claim 13, wherein the first flow cross member comprises a first primary bore and a first additional bore fluidly connected with the first primary bore, wherein the second flow cross member comprises a second primary bore and a second additional bore, wherein the second additional bore is fluidly isolated from the second primary bore.

### Claim 19

A system for performing operations on a well, the system comprising:
a conduit having an upper section and a lower section and a bore extending therethrough;
at least one flow control device positioned between the upper section and the lower section, wherein said at least one flow control device is operable to open and close the bore;
a first flow cross member in fluid communication with the upper section and having a first primary bore extending therethrough in communication with the bore of the conduit, wherein the first flow cross member comprises at least two connectors each adapted for connection to a chemical stimulation device, a blowout preventer, a well tree tool, a well intervention apparatus, or combinations thereof; and
a second flow cross member in fluid communication with the lower section and having a second primary bore extending therethrough in communication with the bore of the conduit, wherein the second flow cross member comprises at least two connectors each adapted for connection to a chemical stimulation device, a running tool, a well tree tool, a well intervention apparatus, or combinations thereof.

### Claim 20 (depends on 19)

The system of claim 19, wherein the first flow cross member further comprises a first additional bore fluidly connected with the first primary bore, wherein the second flow cross member further comprises a second additional bore extending therethrough, wherein the second additional bore is fluidly isolated from the second primary bore.
