Vent sub for lubricator

1 . A method, comprising:

receiving fluid flow into a lubricator, the lubricator being operably coupled to a wellhead;

while receiving the fluid flow into the lubricator,

detecting, using one or more first sensors, a presence or absence of fluid exiting, or after exiting, the lubricator,

in response to detecting the presence or absence of fluid using the one or more first sensors, communicating one or more first signals from the one or more first sensors to a controller,

detecting, using one or more second sensors, a presence or absence of fluid:

entering, or before entering, the lubricator; and/or

within the lubricator,

and

in response to detecting the presence or absence of fluid using the one or more second sensors, communicating one or more second signals from the one or more second sensors to the controller;

verifying, using the controller and based on the one or more second signals received from the one or more second sensors, that the one or more first signals received from the one or more first sensors were not generated due to false reading(s); and

in response to verifying that the one or more first signals received from the one or more first sensors were not generated due to false reading(s), impeding additional fluid flow into the lubricator.

2 . The method of claim 1 , wherein at least one of the one or more first sensors detects an overflow of fluid from the lubricator.

3 . The method of claim 1 , wherein the fluid flow is received into the lubricator through one or more valves; and

wherein impeding additional fluid flow into the lubricator comprises closing the one or more valves.

4 . The method of claim 3 , further comprising:

opening the one or more valves before receiving the fluid flow into the lubricator through the one or more valves.

5 . The method of claim 1 , wherein impeding additional fluid flow into the lubricator comprises stopping, or at least slowing, a fluid transport device (“FTD”).

6 . The method of claim 5 , wherein the fluid flow is received into the lubricator from the FTD.

7 . The method of claim 1 , wherein an overflow of fluid from the lubricator is received through one or more valves; and

wherein impeding additional fluid flow into the lubricator comprises closing the one or more valves.

8 . The method of claim 7 , further comprising:

opening the one or more valves before the overflow of fluid from the lubricator is received through the one or more valves.

9 . A system, comprising:

a lubricator operably coupled to a wellhead and into which fluid flow is adapted to be received;

one or more first sensors adapted to:

detect, while the fluid flow is received into the lubricator, a presence or absence of fluid exiting, or after exiting, the lubricator, and

in response to detecting the presence or absence of fluid, communicate one or more first signals to a controller;

one or more second sensors adapted to:

detect, while the fluid flow is received into the lubricator, a presence or absence of fluid:

entering, or before entering, the lubricator; and/or within the lubricator,

and

in response to detecting the presence or absence of fluid, communicate one or more second signals to the controller;

and

the controller, which is adapted to:

verify, based on the one or more second signals received from the one or more second sensors, that the one or more first signals received from the one or more first sensors were not generated due to false reading(s); and

in response to verifying that that the one or more first signals received from the one or more first sensors were not generated due to false reading(s), cause impedance of additional fluid flow into the lubricator.

10 . The system of claim 9 , wherein at least one of the one or more first sensors is adapted to detect an overflow of fluid from the lubricator.

11 . The system of claim 9 , further comprising:

one or more valves through which the fluid flow is adapted to be received into the lubricator;

wherein the controller is adapted to cause impedance of additional fluid flow into the lubricator by closing the one or more valves.

12 . The system of claim 11 , wherein the one or more valves are further adapted to open to permit the first fluid flow to be received therethrough and into the lubricator.

13 . The system of claim 9 , further comprising:

a fluid transport device (“FTD”) adapted to transport the first fluid flow into the lubricator.

14 . The system of claim 13 , wherein the controller is adapted to cause impedance of additional fluid flow into the lubricator by stopping, or at least slowing down, the FTD.

15 . The system of claim 9 , further comprising:

one or more valves through which an overflow of fluid from the lubricator is adapted to be received;

wherein the controller is adapted to cause impedance of additional fluid flow into the lubricator by closing the one or more valves.

16 . The system of claim 15 , wherein the one or more valves are further adapted to open to permit the overflow of fluid from the lubricator to be received therethrough.

17 . An apparatus, comprising:

a non-transitory computer readable medium; and

a plurality of instructions stored on the non-transitory computer readable medium and executable by one or more processors to implement the following steps:

receiving fluid flow into a lubricator, the lubricator being operably coupled to a wellhead;

while receiving the fluid flow into the lubricator,

detecting, using one or more first sensors, a presence or absence of fluid exiting, or after exiting, the lubricator,

in response to detecting the presence or absence of fluid using the one or more first sensors, communicating one or more first signals from the one or more first sensors to a controller,

detecting, using one or more second sensors, a presence or absence of fluid:

entering, or before entering, the lubricator; and/or

within the lubricator,

and

in response to detecting the presence or absence of fluid using the one or more second sensors, communicating one or more second signals from the one or more second sensors to the controller;

verifying, using the controller and based on the one or more second signals received from the one or more second sensors, that the one or more first signals received from the one or more first sensers were not generated due to false reading(s); and

in response to verifying that the one or more first signals received from the one or more first sensors were not generated due to false reading(s), impeding additional fluid flow into the lubricator.

18 . The apparatus of claim 17 , wherein at least one of the one or more first sensors detects an overflow of fluid from the lubricator.

19 . The apparatus of claim 17 , wherein the fluid flow is received into the lubricator through one or more valves; and

wherein impeding additional fluid flow into the lubricator comprises closing the one or more valves.

20 . The apparatus of claim 19 , wherein the plurality of instructions are executable by one or more processors to implement the following additional step:

opening the one or more valves before receiving the fluid flow into the lubricator through the one or more valves.

21 . The apparatus of claim 17 , wherein impeding additional fluid flow into the lubricator comprises stopping, or at least slowing, a fluid transport device (“FTD”).

22 . The apparatus of claim 21 , wherein the fluid flow is received into the lubricator from the FTD.

23 . The apparatus of claim 17 , wherein an overflow of fluid from the lubricator is received through one or more valves; and

wherein impeding additional fluid flow into the lubricator comprises closing the one or more valves.

24 . The apparatus of claim 23 , wherein the plurality of instructions are executable by one or more processors to implement the following additional step:

opening the one or more valves before the overflow of fluid from the lubricator is received through the one or more valves.

25 . A system, comprising:

one or more first sensors adapted to;

detect, while fluid flow is received into a lubricator operably coupled to a wellhead, a presence or absence of fluid exiting, or after exiting, the lubricator, and

in response to detecting the presence or absence of fluid, communicate one or more first signals to a controller;

one or more second sensors adapted to:

detect, while the fluid flow is received into the lubricator operably coupled to the wellhead, a presence or absence of fluid:

entering, or before entering the lubricator; and/or

within the lubricator,

and

in response to detecting the presence or absence of fluid, communicate one or more second signals to the controller;

and

the controller, which is adapted to:

verify, based on the one or more second signals received from the one or more second sensors, that the one or more first signals received from the one or more first sensors were not generated due to false signal(s); and

in response to verifying that the one or more first signals received from the one or more first sensors were not generated due to false signal(s), actuate one or more first valves through which an overflow of fluid from the lubricator is adapted to be received in order to impede additional fluid flow into the lubricator.

26 . The system of claim 25 , wherein at least one of the one or more first sensors is adapted to detect the overflow of fluid from the lubricator.

27 . The system of claim 25 , further comprising:

one or more second valves through which the fluid flow is adapted to be received into the lubricator.

28 . The system of claim 27 , wherein the one or more second valves are actuable, to further impede additional fluid flow into the lubricator, based on the one or more first sensors and the one or more second sensors detecting the presence or absence of fluid.

29 . The system of claim 25 , further comprising:

a fluid transport device (“FTD”) adapted to transport the fluid flow into the lubricator.

30 . The system of claim 29 , wherein the FTD is adapted to stop, or at least slow down, to further impede additional fluid flow into the lubricator, based on the one or more first sensors and the one or more second sensors detecting the presence or absence of fluid.