A Pump is not necessary to remove liquids from storage blocks. Pumps are used to remove liquids from the environment (e.g. draining a lake or the lava ocean of the Nether) and send them through Liquiducts/Waterproof Pipes.
If you have a fair amount of resources to work with, use Liquiducts for liquid transport. They are much more versatile, powerful, and easier to use than Waterproof Pipes are. If you can use Liquiducts, you'll need either a Crescent Hammer or OmniWrench to manipulate and dismantle them. If you are using Liquiducts, place one Liquiduct adjacent to each Coke Oven (doesn't really matter where on the Coke Oven, although I'd say use one of the side faces and not the top/bottom) and right-click it with your Crescent Hammer/OmniWrench to switch it to output mode. Then, hook up more Liquiducts connecting those two, and then create a network of pipes to send the Creosote Oil to wherever you'll be storing it. Give the Liquiducts next to the Coke Ovens a Redstone signal to cause it to draw liquid from the Coke Ovens and send it through the pipes.
Otherwise, you'll need to use Waterproof Pipes, which are less expensive but also lower quality. Place one Wooden Waterproof Pipe next to each Coke Oven and attach an engine of your choice (I'd go with Redstone) to the Wooden Waterproof Pipes. Wooden Waterproof Pipes will not drain liquid automatically and require power from an engine to do so. Redstone Engines are sufficient for this purpose. Connect either Stone or Cobblestone Waterproof Pipes to the wooden ones and feed the pipes to wherever you'll be storing the liquid. Activate your engines and they should start pumping liquid out of the Coke Ovens and into your storage area.
A note: Waterproof Pipes require power to draw liquid and have a lower liquid capacity per block. Liquiducts do not require power to draw liquid and have a higher liquid capacity per block, as well as allowing for measurement of the throughput of liquid and the amount of liquid in the liquiduct. However, Liquiducts are more resource- and time-intensive to create as well as requiring a greater infrastructure to create. All Liquiducts are, by default, input liquiducts (when receiving a Redstone signal, output liquiducts will extract liquid from adjacent tanks/storage blocks) and will become output Liquiducts when right-clicked with an OmniWrench or Crescent Hammer. All Waterproof Pipes are input pipes except the Wooden Waterproof Pipe, which is an output pipe that requires power to output liquid.
The Semifluid Generator, added by GregTech can be used for the purpose of using Creosote Oil to generate power. It is important to note that this will generate a small amount of power (only 3,000 EU per bucket of oil) and will generate it very slowly (can only produce 8 EU/t of power.) Liquid can be pumped directly into the Generator via usage of Liquiducts or Waterproof Pipes.
Edit: Whoops, forgot to mention: Liquiducts can only be removed from the game environment by holding Shift and right-clicking them with a Crescent Hammer or OmniWrench and are otherwise pretty much impossible to remove, even with a high-tier pickaxe/mining implement, such as a Diamond Drill or similar. Mining them by hand does not return the Liquiduct.